What is the pH of a 0.20 M solution of NH4CI?K(NH3)= 1.8 x 10-5O pH = 10.25O pH = 3.74O pH = 4.98O pH = 6.53O pH = 9.02NH4 (aq) + H2O(1) H3O+(aq) + NH3(aq)

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Answered: What is the pH of a 0.20 M solution of…

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter14: Acids And Bases

Section14.4: The Ph Scale

Problem 14.10E

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In each of the following acid-base reactions, identify the Brnsted acid and base on the left and their conjugate partners on the right. (a) HCO2H(aq) + H2O() HCO2(aq) + H3O+(aq) (b) NH3(aq) + H2S(aq) NH4+(aq) + HS(aq) (c) HSO4(aq) + OH(aq) SO42(aq) + H2O+()
Which of the following conditions indicate an acidic solution? pH = 3.04 (H+| > 1.0 X IO’7 A/ pOH = 4.51 |OH-J = 3.21 X 10"12 M
In each of the following acid-base reactions, identify the Brnsted acid and base on the left and their conjugate partners on the right. (a) C2H5N(aq) + CH3CO2H(aq) C5H5NH+(aq) + CH3CO2(aq) (b) N2H4(aq) + HSO4(aq) N2H5+(aq) + SO42(aq) (c) [Al(H2O)6]3+ (aq) + OH(aq) [Al(H2O)5OH]2+ (aq) + H2O+()
Which acid has the strongest conjugate base? (a) HNO2 (b) C6H5CO2H (c) HCN (d) HCl
(a) Which is the stronger Bronsted acid, HCO3 or NH4+? Which has the stronger conjugate base? (b) Is a reaction between HCO3- ions and NH3 product- or reactant-favored at equilibrium? HCO3(aq) + NH3(aq) CO32(aq) + NH4+(aq) (c) You mix solutions of sodium hydrogen phosphate and ammonia. The net ionic equation for a possible reaction is HPO42(aq) + NH3(aq) PO43(aq) + NH4+(aq) Does the equilibrium lie to the left or to the right for this reaction?
The pH of a 0.10-M solution of propanoic acid, CH3CH2COOH, a weak organic acid, is measured at equilibrium and found to be 2.93 at 25 °C. Calculate the Ka of propanoic acid.
. Calculate the pH corresponding to each of the pOH values listed, and indicate whether each solution is acidic, basic, or neutral. a. pOH = 4.32 b. pOH = 8.90 c. pOH = 1.81 d. pOH = 13.1
Given the following solutions: (a) 0.1 M NH3 (b) 0.1 M Na2CO3 (c) 0.1 M NaCl (d) 0.1 M CH3CO2H (e) 0.1 M NH4Cl (f) 0.l MNH4CH3CO2 (g) 0.1 M NH4CH3CO2 (i) Which of the solutions are acidic? (ii) Which of the solutions are basic? (iii) Which of the solutions is most acidic?
Classify each of the acids in Problem 10-20 as a strong acid or a weak acid. a. H2SO4 (sulfuric acid) b. HC2H3O2 (acetic acid) c. H2C5H6O4 (glutaric acid) d. HCN (cyanic acid)
(a) What is the pH of a 0.105 M HCl solution? (b) What is the hydronium ion concentration in a solution with a pH of 2.56? Is the solution acidic or basic? (c) A solution has a pH of 9.67. What is the hydronium ion concentration in the solution? Is the solution acidic or basic? (d) A 10.0-mL sample of 2.56 M HCl is diluted with water to 250. mL What is the pH of the dilute solution?
Classify each of the acids in Problem 10-19 as a strong acid or a weak acid. a. HClO3 (chloric acid) b. HC3H5O4 (glyceric acid) c. H3C6H5O7 (citric acid) d. H3PO4 (phosphoric acid)
The base ethylamine (CH3CH2NH2) has a Kb of. A closely related base, ethanolamine(HOCH2CH2NH2), has a Kb of 3.2105. (a) Which of the two bases is stronger? (b) Calculate the pH of a 0.10M solution of the strong base?

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What is the pH of a 0.20 M solution of NH4CI? K(NH3)= 1.8 x 10-5 O pH = 10.25 O pH = 3.74 O pH = 4.98 O pH = 6.53 O pH = 9.02 NH4 (aq) + H2O(1) H3O+(aq) + NH3(aq)