7th Edition

ISBN: 9781119457282

Author: JESPERSEN

Publisher: WILEY

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Textbook Question

Chapter 16, Problem 56RQ

A soft drink was put on the market with [ H + ] = 1 .4 × 10 -5 mol L -1 . What is its pH?

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Chapter 16, Problem 55RQ

Chapter 16, Problem 57RQ

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Propanoic acid, CH₂CH₂COOH, is a weak monoprotic acid that is used to inhibit mould formation in bread. A student prepared a 0.10 mol/L solution of propanoic acid and found that the pH was 2.96. What is the acid dissociation constant for propanoic acid? [Hint: Setup an I.C.E. table] CH3CH₂COOH (aq) Ka for propanoic acid is: ←CH3CH₂COO (aq) + H (aq)

COHSOH(ag) + H2On + CeHsO (aq) + H3O*(a9) Ka= 1.12 x 10-10 (a) Phenol is a weak acid that partially dissociates in water according to the equation above. Write the equilibrium-constant expression for the dissociation of the acid in water. (b) What is the pH of a 0.75 M CaHsOH(ag) solution? (C) For a certain reaction involving CaHsOH(ag) to proceed at a significant rate, the phenol must be primarily in its deprotonated form, C3H5O (eg). In order to ensure that the CsHsOH(aq) is deprotonated, the reaction must be conducted in a buffered solution. On the number scale below, circle each pH for which more than 50 percent of the phenol molecules are in the deprotonated form (CoHsO (aq). Justify your answer. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Justification: (d) CeHsOH(ag) reacts with NaOH(ag). Write a net ionic equation representing this reaction (aka: invasion equation). (e) What is the pH of the resulting solution when 30 mL of 0.40 M CSH5OH(aq) is added to 25 mL of 0.60 M NAOH. Show all work…

1. Calculate the pH of a 0.594 M aqueous solution of pyridinium chloride, C5H5NHCl. The Kb of pyridine is 1.8 x 10-9. The answer must be given with the correct number of significant figures. 2. How many grams of NaF must be added to 60.0 mL of 0.500 M HF(aq) to adjust the pH to 3.40? Assume no volume change. The pKa of HF is 3.14.

Chapter 16 Solutions

CHEMISTRY:MOLECULAR..(LL)-PRINT..W/CODE

Ch. 16 - Prob. 1PE Ch. 16 - Practice Exercise 16.2 An aqueous solution of...Ch. 16 - Practice Exercise 16.3 Water draining from old...Ch. 16 - Because rain washes pollutants out of the air, the...Ch. 16 - Practice Exercise 16.5 Find the values of and ...Ch. 16 - Practice Exercise 16.6 Calculate the . (Hint: is...Ch. 16 - Practice Exercise 16.7 Calculate the , and pH in a...Ch. 16 - For each of the following acids, write the...Ch. 16 - For each of the following acids, write the...Ch. 16 - Practice Exercise 16.10 Use Table 16.2 to find all...

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