Compare this value with the one calculated from your measured pH value (higher, lower, or the same). 0000001961 00000 n
Save my name, email, and website in this browser for the next time I comment. NH 4+(aq) + H 2 O (l) H 3 O +(aq) + NH 3 (aq) pH Calculator of aqueous ammonium chloride solution Required fields are marked *, This journal is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported License. So, the equation for Ka is Ka= [H+] [NH3]/ [NH4+] - we will leave the NO3- ion out of it, since it doesn't participate in the acid/base equilibrium. National Library of Medicine. Therefore, the configuration of NH4+ is SP3. Nitrogens valence electron count, however, is 5, owing to its position in the 5th group of the periodic table. Table of Acids with Ka and pKa Values* CLAS * Compiled . The K a value of ammonium ion (NH 4+) is 5.610 10, the K b value of ammonia NH 3= 1.810 5, then : A Ammonia is more strongly basic than ammonium is acidic. Hello I need help with this excersise: How many moles of NH4Cl are neccesary to add to 1 liter of solution of Co2+ 0,20 M in order to prevent the precipitation when the solution is saturated with H2S (0,1M) and the pH is 7,50. . JywyBT30e [`
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A link to the app was sent to your phone. Department of Health and Human Services. The concentration of water is absorbed into the value of K b; K b provides a measure of the equilibrium position (i) if K b is large, the products of the dissociation reaction are favoured (ii) if K b is small, undissociated base is favoured.. K b provides a measure of the strength of a base (i) if K b is large, the base is largely dissociated so the base is strong In order to understand this properly , let us do a practical example: What is the pH of a 0.43M solution of NH4Cl? The dark, 12.0 M NH3 How many drops (1 drop 0.05 mL) of this solution would you use? Save my name, email, and website in this browser for the next time I comment. I set up ICE from the equation: NH3 + H20 ------NH4 + OH- I 0.25 0 0 C -x +x +x E 0.25-x x x 1.8 *10^-5 = x*x/ 0.25-x 4.5* 10^-6 = x2 took the square root to get. Menu. In most common scenarios, atomic orbitals with similar energy combine to form hybrid orbitals. Although many carbonate salts are insoluble, those of \(\ce{Na^{+}}\), \(\ce{K^{+}}\), and \(\ce{NH4^{+}}\) are quite soluble. when compared to the previous ones. I got the two equations but I do not know where to begin. { "Carbonate_Ion_(CO\u2083\u00b2\u207b)" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "Halide_Ions_(Cl\u207b,_Br\u207b,_I\u207b)" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "Phosphate_Ion_(PO\u2084\u00b3\u207b)" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "Sulfate_Ion_(SO\u2084\u00b2\u207b)" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "Sulfide_Ion_(S\u00b2\u207b)" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "Sulfite_Ion_(SO\u2083\u00b2\u207b)" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()" }, { Characteristic_Reactions_of_Select_Metal_Ions : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", Confirmatory_Tests : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", Properties_of_Select_Nonmetal_Ions : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", Semimicro_Analytical_Techniques : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", Separations_with_Thioacetamide : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()" }, [ "article:topic", "Carbonate", "authorname:jbirk", "carbonate ion", "showtoc:no", "license:ccbyncsa", "licenseversion:40" ], https://chem.libretexts.org/@app/auth/3/login?returnto=https%3A%2F%2Fchem.libretexts.org%2FBookshelves%2FAnalytical_Chemistry%2FSupplemental_Modules_(Analytical_Chemistry)%2FQualitative_Analysis%2FProperties_of_Select_Nonmetal_Ions%2FCarbonate_Ion_(CO%25E2%2582%2583%25C2%25B2%25E2%2581%25BB), \( \newcommand{\vecs}[1]{\overset { \scriptstyle \rightharpoonup} {\mathbf{#1}}}\) \( \newcommand{\vecd}[1]{\overset{-\!-\!\rightharpoonup}{\vphantom{a}\smash{#1}}} \)\(\newcommand{\id}{\mathrm{id}}\) \( \newcommand{\Span}{\mathrm{span}}\) \( \newcommand{\kernel}{\mathrm{null}\,}\) \( \newcommand{\range}{\mathrm{range}\,}\) \( \newcommand{\RealPart}{\mathrm{Re}}\) \( \newcommand{\ImaginaryPart}{\mathrm{Im}}\) \( \newcommand{\Argument}{\mathrm{Arg}}\) \( \newcommand{\norm}[1]{\| #1 \|}\) \( \newcommand{\inner}[2]{\langle #1, #2 \rangle}\) \( \newcommand{\Span}{\mathrm{span}}\) \(\newcommand{\id}{\mathrm{id}}\) \( \newcommand{\Span}{\mathrm{span}}\) \( \newcommand{\kernel}{\mathrm{null}\,}\) \( \newcommand{\range}{\mathrm{range}\,}\) \( \newcommand{\RealPart}{\mathrm{Re}}\) \( \newcommand{\ImaginaryPart}{\mathrm{Im}}\) \( \newcommand{\Argument}{\mathrm{Arg}}\) \( \newcommand{\norm}[1]{\| #1 \|}\) \( \newcommand{\inner}[2]{\langle #1, #2 \rangle}\) \( \newcommand{\Span}{\mathrm{span}}\)\(\newcommand{\AA}{\unicode[.8,0]{x212B}}\), status page at https://status.libretexts.org. During hybridization, the orbitals having similar energy can mix. The loss of an electron is depicted by putting a + sign enclosing the Lewis structure. Acid with values less than one are considered weak. The, Kb for NH3 is 1.81 x 10^-5 Ka for NH4+ is Kw / Kb = 10^-14 / 1.81 x 10^-5 = 5.52 x 10^-10. The K_a of acetic acid (from Table 16.7) is 1.8 10^{5}. What is the KB of this base? Ammonium ion formed by the release of an electron has 8 total electrons in the valence shell. 6 . 5.6 x 10-10 (x)(x)/(0.200 -x) 5.6 x 10-10 x2/(0.200). The Ka of NH4+ is 5.6 1010. I set up ICE from the equation: NH3 + H20 ------NH4 + OH- I 0.25 0 0 C -x +x +x E 0.25-x x x 1.8 *10^-5 = x*x/ 0.25-x 4.5* 10^-6 = x2 took the square root to get. The pKa values for organic acids can be found in Appendix II of Bruice 5th Ed. Expectorant in cough syrups. Naplex 2020 Experience, We also acknowledge previous National Science Foundation support under grant numbers 1246120, 1525057, and 1413739. 0000001472 00000 n
The pH of a salt solution of Strategy Each species listed is either a conjugate base or a conjugate acid. Explain briefly? The end goal is to identify a configuration with the best electron arrangement such that the formal charges and the octet rule are upheld. 8600 Rockville Pike, Bethesda, MD, 20894 USA. HHS Vulnerability Disclosure. . To identify the corresponding Brnsted acid, add a proton to the formula to get \text {CH}_3\text {COOH} CH3COOH (acetic acid). 0000019496 00000 n
NH3, or commonly known as Ammonia is widely used as a fertilizer, refrigerant gas, water purification, and for industrial manufacture. What is the Ka K a of N H+ 4 N H 4 +, its conjugate acid? nh4 oh- this is before the titration, no h added yet. Which Of The Following Is A Form Of Political Participation, kb nh4oh- nh3 1.8 10-5 xx 0.030-x 1.8 10-5 xx 0.030 x 7.348 10-4 oh- poh- 3.14 ph 10.86 2 ch 17 42 b weak base titration after 0.010 l of h is added to the base solution in part b. h added 0.0250 m 0.0100l 2.5 10-4 mol nh3 initial 0.030 m ( 9.0 10-4 mole) kb nh4oh- nh3 0
You can ask a new question or browse more CHEMISTRY HELP !!!! Make Play Phineas And Ferb, While the exchange between atomic orbits of different atoms leads to the creation of molecular orbits, hybridization of an atom is assumed to be a combination of different atomic orbits, overlaying one another in different fractions. Expectorant in cough syrups. Problem: If you know Kb for ammonia, NH3, you can calculate the equilibrium constant, Ka, for this reaction by the equation: NH4 + NH3 + H + a) Ka = KwKb b) Ka = Kw / Kb c) Ka = 1 / Kb d) Ka = Kb / Kw Use the conjugate acid from the equation. (Ka)(3.8 x 10-10) 1 x 10-14 Ka 2.6 x 10-5. pOH -log(2.9 x 10-3) 2.54. pH 14 2.54 11.46. Referring to the octet rule, hydrogen needs only 2 valence electrons, which it already has. The therapeutic effects of Ammonium Chloride depend upon the . Consider the following reaction in aqueous solution: H2O + NH3 NH4+ + OH- Identify each compound in this reaction (considering both forward and reverse reactions) as either a Bronsted acid or base. trailer
. nh3nh3? 35,000 worksheets, games, and lesson plans, Spanish-English dictionary, translator, and learning, a Question - :NH3NH4+,"=+,,". The Kb of CN is 2 105. 1. The NH4 ion will react with water (hydrolysis) and form NH3 and H3O + (hydronium ion). Ammonium bromide, NH4Br, is the ammonium salt of hydrobromic acid. The. Your email address will not be published. Its conversion to Ammonium changes certain chemical properties and while the Lewis structure helps us to understand the 2-dimensional arrangement, molecular geometry sheds light on its structural properties. The LibreTexts libraries arePowered by NICE CXone Expertand are supported by the Department of Education Open Textbook Pilot Project, the UC Davis Office of the Provost, the UC Davis Library, the California State University Affordable Learning Solutions Program, and Merlot. The Kb Of CN- Is 2 X 10-5. The Ka of NH4+ is 5.6 1010. 1. For better understanding, you can also refer to the already written article on the polarity of NH4. Less than 7 because CN is a, Greater than 7 because CN is a stronger base It can be considered as an extension of the valence bond concept and lays its foundation on the molecular and quantum mechanics of an atom. %%EOF
The concepts of Lewis Structure, Molecular Geometry, and Hybridization hold great significance in understanding the structure, geometry, and subsequently the behavior of a substance, which is a direct result of the properties of associated elements atoms. . Less than 7 because NH4+ is a stronger acid The kidney uses ammonium (NH4+) in place of sodium (Na+) to combine with fixed anions in maintaining acid-base balance, especially as a homeostatic compensatory mechanism in metabolic acidosis. The Kb of CN- The Kb of CN- is 2 x 10-5. Hybridization brings about changes in the orbital arrangement of an atom as well. The NH4+ ion has no pi bonds. These new orbitals may have different shapes, energies, etc. To do this, you first need to find the Ka for NH4 +. 0000001614 00000 n
This system acts as a buffer because the ammonia reacts with acid and the ammonium ion reacts with base:. Hybridization provides the NH4+ atom stability, therefore giving it numerous advantageous uses. The easiest way to figure Kb and pKb out, for me, would be to calculate the Ka first, and then from that calculate the Kb, and from that, calculate pKb. No packages or subscriptions, pay only for the time you need. 5.6 x 10-10. Legal. Kb for NH3 is 1.81 x 10^-5 What is the present participle for Preparar? Since the NH4+ atom has 8 valence electrons, our arrangement will be according to 2,4,6, and 8. In strongly acidic solution, \(\ce{CO2}\) gas is evolved. NH3 is the chemical formula of Ammonia. . Since Ammonium has 0 ion pairs and 4 sigma bonds, the hybridization value is 4. Ka NH4+ (aq) = 5.6 x 10^-10 3. Hints Now you'll have to compare this to your calculated value. The Kb for NH3 is 1.8 x 10-5, the Ka is 5.6 x 10-10( 1.0 x 10-14/1.8 x 10-5). You'll get a detailed solution from a subject matter expert that helps you learn core concepts. . Follow 2 Add comment Report 1 Expert Answer Best Newest Oldest J.R. S. answered 03/31/21 Tutor 5.0 (140) Ph.D. University Professor with 10+ years Tutoring Experience About this tutor The Ka of NH4+ is 5.6 1010. How do you evaluate a systematic review article? A bond between two electrons is represented by a line marked by a dot at both ends, involving the participating electrons. You can ask a new question or browse more Chemistry Help Please!!! 2022 0 obj<>stream
Experts are tested by Chegg as specialists in their subject area. I got the two equations but I do not know where to begin. For Free. : :NH3NH4+,NH3+H+=N. city of san luis obispo planning department; which came first tennis or badminton; fastest 13 year old 40 yard dash; brick hockey tournament tryouts How do you declare a global variable in Java? [2], Except where otherwise noted, data are given for materials in their, https://en.wikipedia.org/w/index.php?title=Ammonium_bromide&oldid=1107010044, This page was last edited on 27 August 2022, at 17:09. Copyright 2018 RJFP. Greater than 7 because CN is a stronger base 0000012605 00000 n
The pH of a salt solution of NH4CN would be: the Website for Martin Smith Creations Limited . Kittens For Sale In Iowa, A positively charged polyatomic ion of Ammonium or NH4+ comes into existence when an Ammonia atom goes through the process of protonation, that is, it loses one of its electrons and becomes positively charged. 11 Uses of Platinum Laboratory, Commercial, and Miscellaneous, CH3Br Lewis Structure, Geometry, Hybridization, and Polarity. 2) than CN is a base. the initial concentration of ammonium chloride will be .1, and 0 for both NH2 and H3O+. If you know the value of Kb (base dissociation constant) of a weak base, you can use it to calculate the pH of a solution containing the base using the following steps: Write the equation for the dissociation of the base in water: B + H2O BH+ + OH- Write the expression for the Kb of the base: Kb = [BH+] [OH-]/ [B] Another way of identifying the hybridization of an atom is by the following formula: Hybridization = Number of Ion Pairs + Number of Sigma Bonds. NH4Cl is the salt of a strong acid (HCl) and a weak base ( NH3) . What I did, but its incorrect Using HH equation I found out NH4 pKa = 9.24 from table pH = pKa + log [A-] / [HA].
Your Ultimate AI Essay Writer & Assistant. Star Z-45 Magazine, Ammonium bromide, NH 4 Br, is the ammonium salt of hydrobromic acid. 1. Answer (1 of 2): [H+]^2 * Kb = Kwater * [NH4Cl] [H+]^2 * 1.8 x 10^-5 = 10^-14 * 0.35 [H+]^2 = 1.9410^-10 [H+] = 1.3910^-5 M pH = -log[H+] pH = 5-log1.39 pH = 4.86 To solve for pH, you must first solve for [H3O]. than NH4+ is an acid. x1 04a\GbG&`'MF[!. (a) A K_b K b value is requested, indicating that the acetate ion is a conjugate base. Most questions answered within 4 hours. Carbonate ion, a moderately strong base, undergoes considerable hydrolysis in aqueous solution. 0000002830 00000 n
Arsenous acid H 3 AsO 3 6.610 -10 Ascorbic acid H 2 C . HAsO 4 2- 3.210 -12. NH4CN would be: Ka = 5.56x10^-10 NH3 + HOH ---> NH4+ + OH^-Kb = [NH4^+][OH^-]/[NH3] Ka x Kb = 1x10^-14. Calculate Ka for NH4+ ion using Kb for NH3 (1.8 x 10-5). Our Kb expression is Kb [NH4+][OH-] / [NH3]. . Check questions. Relation between Ka and Kb. 0000000751 00000 n
Ka = 1x10^-14/Kb = 1x10^-14/1.8x10^-5. %PDF-1.4
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Most common types of hybridizations are sp, sp2, sp3, sp3d, sp3d2, sp3d3 etc. questions. Ammonium Bromide is strong electrolyte when put in water: Ammonium bromide decomposes to ammonia and hydrogen bromide when heated at elevated temperatures: Ammonium bromide is used for photography in films, plates and papers; in fireproofing of wood; in lithography and process engraving; in corrosion inhibitors; and in pharmaceutical preparations. The ammonium ion (NH4+) in the body plays an important role in the maintenance of acid-base balance. 2020 0 obj <>
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The Kb of CN is 2 105. Warzone Hacks Reddit, Your email address will not be published. Table of Solubility Product Constants (K sp at 25 o C). Nba 2k20 Player Tracker, To identify the corresponding Brnsted acid, add a proton to the formula to get \text{CH}_3\text{COOH} (acetic acid). The problem is that the products ( Cu(NH3)4 and SO4) should be soluble, no? What is the setting in the book A dogs Purpose? When ammonium (NH4+) is placed in water, a chemical reaction occurs and an equilibrium is established as shown . (b) A K_a value is requested, indicating that the methylammonium ion is a conjugate acid. (c) \text{F}^ is the conjugate base of \text{HF; Ka} = 7.1 10^{4}. In NH4+, nitrogen and the 4 hydrogen atoms make 4 sigma bonds, out of which 3 are covalent bonds and the fourth one is a dative bond. The ppt is Cu(OH)2. NH4CN would be: 2003-2023 Chegg Inc. All rights reserved. The concept of Hybridization decrees that atomic orbits fuse with one another to form new degenerated hybrid orbitals, which influence bonding properties and molecular geometry of the atoms of an element. Fastest 17 Hmr Ammo, (d) \text{NH}_4^+ is the conjugate acid of \text{NH}_3; K_b = 1.8 10^{5} . . Which Of The Following Is A Form Of Political Participation, Creative Commons Attribution-NonCommercial 3.0 Unported License. What is the pKa of NH4+? Search 0000000016 00000 n
Because of this, even insoluble carbonate salts dissolve in acid. (Ka)(3.8 x 10-10) 1 x 10-14 Ka 2.6 x 10-5 This page titled Carbonate Ion (CO) is shared under a CC BY-NC-SA 4.0 license and was authored, remixed, and/or curated by James P. Birk. Type Formula K sp; Bromides : PbBr 2: 6.3 x 10-6: AgBr: 3.3 x 10-13: Carbonates : BaCO 3: 8.1 x 10-9: CaCO 3: 3.8 x 10-9: CoCO 3: 8.0 x 10-13: CuCO 3: 2.5 x 10-10: FeCO 3: 3.5 x 10-11: PbCO 3: 1.5 x 10-13: MgCO 3: 4.0 x 10-5: MnCO 3: 1.8 x 10-11: NiCO 3: 6.6 x 10-9: Ag 2 CO 3: 8.1 x 10-12: ZnCO 3: 1.5 x 10-11: Chlorides (a) A K_b value is requested, indicating that the acetate ion is a conjugate base. KaKb = Kw = 1E-14 According to the base constant (Kb), only a small fraction of ammonia molecules ionize, so that the molar concentration of each ion compared to the initial molar concentration of ammonia is negligible. xb```b``yXacC;P?H3015\+pc 0000014794 00000 n
There is no such animal as NH4 as a neutral material. The pH of a salt solution of NH4CN would be: The Ka of NH4+ is A Lewis Structure is a depiction of the arrangement of electrons in the standalone atoms of an element. While the Lewis Structure is a 2-dimensional depiction of an atom of a molecule, molecular geometry is the visualization and designing of the atoms in a 3-dimensional space. Ammonium bromide is a weak acid with a pKa of ~5 in water. I would expect the pH of a 0.1M solution of NaC2H3O2 to be the same as a 0.1M solution of KC2H3O2. The K_b of methylamine (from Table 16.8) is 4.4 10^{4}. Carbonate ion can be precipitated from solution as white barium or calcium salts that have low solubilities: Although many carbonate salts are insoluble, those of Na +, K +, and NH 4 + are quite soluble. Atomic orbits of comparable levels of energy participate in forming hybrid orbitals. 0000003077 00000 n
Such a structure arises from the need for a refined geometry of atoms necessary for electrons to pair up and thus, form different chemical bonds, as inducted by the valence bond theory. 2. The properties of an atom identified through molecular geometry help in understanding the behavior, utility, and reactivity of the element. The pH of a salt solution of NH4CN would be: Hints The Ka of NH4+ is 5.6 x 10-10. Kb = [OH-]^2 / [NH4OH] I'm thinking that, if I had the Ka or Kb, I could calculate x with the ICE method, and find the pH from there. the initial concentration of ammonium chloride will be .1, and 0 for both NH2 and H3O+. The kidney uses ammonium (NH4+) in place of sodium (Na+) to combine with fixed anions in maintaining acid-base balance, especially as a homeostatic compensatory mechanism in metabolic acidosis. We know that Kb 1.8 * 10^-5 and [NH3] is 15 M. Question: The Kb of NH3 N H 3 is 1.8xd710u22125 1.8 xd7 10 u2212 5 . 2020 22
0000003396 00000 n
document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Welcome to Techiescientist.com. The Kb Of CN Is 2 105. National Center for Biotechnology Information. Acid Formula K a. Acetic acid HC 2 H 3 O 2 1.810 -5 Acrylic acid HC 3 H 3 O 2 5.510 -5 Aluminum 3+ ion Al 3+ (aq) 1.410 -5 Ammonium ion NH 4 + 5.610 -10 Anilinium ion C 6 H 5 NH 3 + 1.410 -5 Arsenic acid H 3 AsO 4 6.010 -3 H 2 AsO 4 - 1.010 -7. 1. But the + sign decrees that NH4+ has 8 valence shell electrons, due to the positive ion. Use the tabulated ionization constants and Equation 16.8 to calculate each indicated K value. 0000003442 00000 n
Since the ammonium ion functions as a weak acid, the equilibrium constant is given the label Ka. I am Savitri,a science enthusiast with a passion to answer all the questions of the universe. 2. Your email address will not be published. The Ka of NH4+ is Ammonium nitrate | NH4NO3 or H4N2O3 | CID 22985 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological . If we total out the number of electrons, it will be (14) + (51) 1 = 4 + 5 1 = 8. PUGVIEW FETCH ERROR: 403 Forbidden National Center for Biotechnology Information 8600 Rockville Pike, Bethesda, MD, 20894 USA Contact Policies FOIA HHS Vulnerability Disclosure National Library of Medicine National Institutes of Health 0000003318 00000 n
2) how should the pH of a 0.1M solution of NaC2 at H3O2 compare with that of a 0.1 M solution of KC2H3O2? The concept of molecular geometry aims to depict the generic shape and structure of a molecule, accurate to the length between different bonds, the bond and torsional angles, other geometrical factors and variables that govern the shape and arrangement of an atom, and therefore, a molecule. 0000017205 00000 n
On exposure to air it gradually assumes a yellow color because of the oxidation of traces of bromide (Br ) to bromine (Br 2 ). Problem: If you know Kb for ammonia, NH3, you can calculate the equilibrium constant, Ka, for this reaction by the equation: NH4 + NH3 + H + a) Ka = KwKb b) Ka = Kw / Kb c) Ka = 1 / Kb d) Ka = Kb / Kw Use the conjugate acid from the equation. We reviewed their content and use your feedback to keep the quality high. I have no idea what NaC2 is.I suspect you were trying to write NaC2H3O2. M2+ + NH3 M(NH3)2+ K1 = 102 M(NH3)2+ + NH3 M(NH3)2 2+ K2 = 103 M(NH3)2 2+ + NH3 M(NH3)3 2+ K3 = 102 A 1.0 103 mol sample of M(NO3)2 is added to 1.0 L of 15.0 M NH3 (Kb = 1.8, NH3 + HCl = NH4+ + Cl- c(NH3)=(0.02L * 0.08M)/0.06L= 0.02667 M c(HCl)=(0.04L * 0.04M)/0.06L= 0.02667 M c(NH4+)=c(HCl) Kb=[NH4+][OH-]/[NH3] Kb=1.76*10^(-5) So i tried to calculate it like, The problem is that the products ( Cu(NH3)4 and SO4) should be soluble, no? Keeping Nitrogen in the center, and considering Hydrogens position on the outside, we can place the 4 hydrogen atoms surrounding the single nitrogen atom. Ammonia in aqueous solution is basic: NH3(aq) + H2O(aq) NH4+(aq) + OH-(aq) Kb = [NH4+] x[OH-] = 1.8 x 10-5 [NH3] The ammonium ion is its conjugate acid We can write an equation for NH4+ acting as an acid as: NH4+(aq) + H2O(aq) NH3(aq) + H3O+ (aq) Ka = [NH3] x[H3O+] = 5.6 x 10-10 .
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