REVEL INTRO TO CHEMISTRY
13th Edition
ISBN: 9780135213773
Author: Timberlake
Publisher: PEARSON EDUCATION (COLLEGE)
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Textbook Question
Chapter 10.8, Problem 10.58PP
Consider the buffer system of nitrous acid, HNO2, and its salt, NaNO2. HNO2(aq) + H20(1) H3O(aq) + NO2(aq)
a. The purpose of this buffer system is to:
1. maintain (HNO2}
2. maintain [NO2 J
3. maintain pH
b. The weak acid is needed to:
1. provide the conjugate base
2. neutralize added OW
3. provide the conjugate acid
c. If H3O is added, it is neutralized by:
1. the salt
2. H20
3.0H -
d. When OH is added, the equilibrium shifts in the direction of the:
1. reactants
2. products
3. does not change
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Students have asked these similar questions
A solution is made by dissolving 44.1 g of Ba(NO₂)₂ in 500.0 mL of water.
(a) Does Ba²⁺ have any acidic or basic properties?
(b) Does NO₂⁻ have any acidic or basic properties?
(c) As NO₂⁻ is a base, write the basic equilibrium equation that exists in solution
(d) What is the value of Kb for NO₂⁻? The Ka of HNO₂ is 4.5 × 10⁻⁴.
(e) Determine the pH of the solution
Codeine, C18H26O3N is the active ingredient in the sedative Paregoric™ and is a weak Brønsted base with Kb = 8.9 x 10–7 (conjugate acid is C18H26O3NH+).
To a 20.00 mL sample of 0.0155 M aqueous solution of Codeine is added 9.75 mL of 0.0180 M HCl(aq).
a) Calculate the pH of the above solution.
b) To the above solution is added 1.00 mL of 0.0150 M NaOH(aq). Calculate the new pH that results and the % change in pH.
Show your work and justify any approximations made.
a.) Enough of a monoprotic weak acid is dissolved in water to produce a 0.0114 M solution. The pH of the resulting solution is 2.68. Calculate the Ka for the acid.
b.) A certain weak base has a Kb of 8.70×10−7. What concentration of this base will produce a pH of 10.39?
c.) What is the pH of a solution that is 0.0730 M in CH3NH3NO3 at 25 ∘C ?
d.) Calculate the pH of a 0.616 M solution of sodium acetate ( CH3COONa)?
Thank you!
Chapter 10 Solutions
REVEL INTRO TO CHEMISTRY
Ch. 10.1 - Indicate whether each of the following statements...Ch. 10.1 - Indicate whether each of the following statements...Ch. 10.1 - Name each of the following acids or bases: HCl...Ch. 10.1 - Name each of the following acids or bases: Al(OH)3...Ch. 10.1 - Write formulas for each of the following acids and...Ch. 10.1 - Write formulas for each of the following acids and...Ch. 10.2 - Identify the reactant that is Bronsted-Lowry acid...Ch. 10.2 - Identify the reactant that is Bronsted-Lowry acid...Ch. 10.2 - Write the formula for the conjugate base for each...Ch. 10.2 - Write the formula for the conjugate base for each...
Ch. 10.2 - Prob. 10.11PPCh. 10.2 - Write the formula for the conjugate acid for each...Ch. 10.2 - Identify the Bronsted-Lowry acid-base pairs in...Ch. 10.2 - Identify the Bronsted-Lowry acid-base pairs in...Ch. 10.3 - Using TABLE10.3, identify the stronger acid in...Ch. 10.3 - Using TABLE10.3, identify the stronger acid in...Ch. 10.3 - Using TABLE10.3, identify the weaker acid in each...Ch. 10.3 - Using TABLE10.3, identify the weaker acid in each...Ch. 10.4 - What is meant by the term reversible reaction?Ch. 10.4 - When does a reversible reaction reach equilibrium?Ch. 10.4 - Which of the following are at equilibrium? The...Ch. 10.4 - Which of the following are not at equilibrium? The...Ch. 10.4 - Use Le Ch?telier’s principle to predict whether...Ch. 10.4 - Use Le Châtelier’s principle to predict whether...Ch. 10.5 - Why are the concentrations of H3O+and OH- equal in...Ch. 10.5 - Prob. 10.26PPCh. 10.5 - Prob. 10.27PPCh. 10.5 - If a base is added to pure water, why does the...Ch. 10.5 - Indicate whether each of the following solutions...Ch. 10.5 - Indicate whether each of the following solutions...Ch. 10.5 - Calculate the [OH-] of each aqueous solution with...Ch. 10.5 - Calculate the [OH-] of each aqueous solution with...Ch. 10.5 - Calculate the [H3O+] of each aqueous solution with...Ch. 10.5 - Calculate the [H3O+] of each aqueous solution with...Ch. 10.6 - State whether each of the following is acidic,...Ch. 10.6 - State whether each of the following is acidic,...Ch. 10.6 - Why does a neutral solution have a pH of 7.0?Ch. 10.6 - If you know the [OH-] , how can you determine the...Ch. 10.6 - Calculate the pH of each solution given the...Ch. 10.6 - Calculate the pH of each solution given the...Ch. 10.6 - Complete the following table: [H3O+] [OH-] pH...Ch. 10.6 - Complete the following table: [H3O+] [OH-] pH...Ch. 10.6 - A patient with severe metabolic acidosis has a...Ch. 10.6 - A patient with respiratory alkalosis has a blood...Ch. 10.7 - Complete and balance the equation for each of the...Ch. 10.7 - Prob. 10.46PPCh. 10.7 - Balance each of the following neutralization...Ch. 10.7 - Balance each of the following neutralization...Ch. 10.7 - Write a balanced equation for the neutralization...Ch. 10.7 - Write a balanced equation for the neutralization...Ch. 10.7 - What is the molarity of a solution of HCl if 5.00...Ch. 10.7 - What is the molarity of an acetic acid solution if...Ch. 10.7 - If 32.8 mL of a 0.162 M NaOH solution is required...Ch. 10.7 - If 38.2 mL of a 0.163 M KOH solution is required...Ch. 10.8 - Which of the following represents a buffer system?...Ch. 10.8 - Which of the following represents a buffer system?...Ch. 10.8 - Consider the buffer system of hydrofluoric acid,...Ch. 10.8 - Consider the buffer system of nitrous acid, HNO2,...Ch. 10.8 - Prob. 10.59PPCh. 10.8 -
10.60 Why would the pH of your blood plasma...Ch. 10.8 - Prob. 10.61PPCh. 10.8 - Prob. 10.62PPCh. 10.8 - At rest, the [H3O+] of the stomach fluid is 2.0 ...Ch. 10.8 - Prob. 10.64PPCh. 10.8 - In Larry’s esophageal PH test, a PH value of 3.60...Ch. 10.8 - Prob. 10.66PPCh. 10.8 - Write the balanced chemical equation for the...Ch. 10.8 - Prob. 10.68PPCh. 10.8 - How many grams of CaCO3 are required to neutralize...Ch. 10.8 - Prob. 10.70PPCh. 10 - Identify each of the following as an acid or a...Ch. 10 - Prob. 10.72UTCCh. 10 - Prob. 10.73UTCCh. 10 - Complete the following table: (10.2) Base...Ch. 10 - State whether each of the following solutions is...Ch. 10 - Prob. 10.76UTCCh. 10 - Prob. 10.77UTCCh. 10 - Adding a few drops of a strong acid to water will...Ch. 10 - Prob. 10.79UTCCh. 10 - Prob. 10.80UTCCh. 10 - Prob. 10.81APPCh. 10 - Prob. 10.82APPCh. 10 - Using TABLE10.3, identify the stronger acid in...Ch. 10 - Using TABLEIO.3 , identify the weaker acid in each...Ch. 10 - Prob. 10.85APPCh. 10 - Prob. 10.86APPCh. 10 - Determine the pH for the following solutions:...Ch. 10 - Prob. 10.88APPCh. 10 - Prob. 10.89APPCh. 10 - Prob. 10.90APPCh. 10 - Calculate the {H3O+] and [OH-] for a solution with...Ch. 10 - Calculate the [H3O+] and [OH-] for a solution with...Ch. 10 - Prob. 10.93APPCh. 10 - Prob. 10.94APPCh. 10 - Prob. 10.95APPCh. 10 - A 1O.O-mL sample of vinegar, which is an aqueous...Ch. 10 - Prob. 10.97APPCh. 10 - Calculate the volume, in milliliters, of a 0.2 15...Ch. 10 - Prob. 10.99APPCh. 10 - Prob. 10.100APPCh. 10 - Prob. 10.101CPCh. 10 - Prob. 10.102CPCh. 10 - Prob. 10.103CPCh. 10 - Prob. 10.104CPCh. 10 - Prob. 10.105CPCh. 10 - Prob. 10.106CPCh. 10 - Determine each of the following for a 0.050 M KOH...Ch. 10 - Determine each of the following for a 0.100 M HBr...Ch. 10 - A 0.204 M NaOH solution is used to titrate 50.0 mL...Ch. 10 - A 0.312 M KOH solution is used to titrate 15.0 mL...Ch. 10 - One of the most acidic lakes in the United States...Ch. 10 - Prob. 10.112CP
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