General, Organic, and Biological Chemistry - 4th edition
4th Edition
ISBN: 9781259883989
Author: by Janice Smith
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 9.10, Problem 9.18P
Determine whether a solution containing each of the following substances is a buffer. Explain your reasoning.
a.
b.
c.
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Students have asked these similar questions
Which of the following pairs cannot be used to make a buffer?
a.
HF and NaF
b.
HC2H3O2 and NaOH
c.
HBr and KBr
d.
NH3 and NH4Cl
Which of the following pairs cannot be used to make a buffer?
a.
HC2H3O2 and NaOH
b.
HBr and KBr
c.
NH3 and NH4Cl
d.
HF and NaF
Which of the following pairs of substances will form a buffer when dissolved in water?
A. HC2H3O2 and HF
B. HNO2 and KNO3
C. HCN and NaCN
D. NaCIO and NaCIO2
Chapter 9 Solutions
General, Organic, and Biological Chemistry - 4th edition
Ch. 9.1 - Name each acid: (a)HF;(b)HNO3;(c)HCN.Ch. 9.1 - If the polyatomic anion C1O2- is called chlorite,...Ch. 9.1 - Which of the following species can be...Ch. 9.1 - Which of the following species can be...Ch. 9.1 - Classify each reactant as a Brønsted-Lowry acid or...Ch. 9.2 - Determine the conjugate acid of each species:...Ch. 9.2 - Determine the conjugate base of each species:...Ch. 9.2 - Draw the structure of the conjugate base of each...Ch. 9.2 - Label the acid, the base, the conjugate acid, and...Ch. 9.2 - Identify the acid, the base, the conjugate acid,...
Ch. 9.2 - Ammonia, NH3, is amphoteric. (a) Draw the...Ch. 9.2 - Fill in the missing product in each acid-base...Ch. 9.3 - Diagrams A and B represent acids dissolved in...Ch. 9.3 - Diagrams represent three acids (HA) dissolved in...Ch. 9.3 - Label the stronger acid in each pair. Which acid...Ch. 9.3 - Are the reactants or products favored at...Ch. 9.3 - If lactic acid is similar in strength to acetic...Ch. 9.4 - Rank the acids in each group in order of...Ch. 9.4 - Use the acid dissociation constants in Table 9.3...Ch. 9.4 - Consider the weak acids, HCN and H2CO3. Which acid...Ch. 9.5 - Calculate the value of [OH-] from the given [H3O+]...Ch. 9.5 - Calculate the value of [H3O+] from the given [OH-]...Ch. 9.5 - Calculate the value of [H3O+] and [H3O-] in each...Ch. 9.6 - (a) What is the difference in [H3O+] for each pair...Ch. 9.6 - Convert each H3O+ concentration to a pH value. a....Ch. 9.6 - What H3O+ concentration corresponds to each pH...Ch. 9.6 - Convert each H3O+ concentration to a pH value....Ch. 9.6 - What H3O+ concentration corresponds to each pH...Ch. 9.6 - What is the H3O+ concentration in a sports drink...Ch. 9.7 - Write a balanced equation for each acid-base...Ch. 9.7 - Write the net ionic equation for each reaction in...Ch. 9.7 - The acid in acid rain is generally sulfuric acid...Ch. 9.7 - Write a balanced equation for the reaction of...Ch. 9.8 - Determine whether each salt forms an acidic,...Ch. 9.8 - Which of the following salts forms an aqueous...Ch. 9.9 - What is the molarity of an HCI solution if 25.5 mL...Ch. 9.9 - How many milliliters of 2.0MNaOH are needed to...Ch. 9.10 - Determine whether a solution containing each of...Ch. 9.10 - Consider a buffer prepared from the weak acid HCO3...Ch. 9.10 - Calculate the pH of a dihydrogen...Ch. 9.10 - What is the pH of a buffer that contains...Ch. 9 - Which of the following species can be...Ch. 9 - Which of the following species can be...Ch. 9 - Prob. 23PCh. 9 - Which of the following species can be...Ch. 9 - Prob. 25PCh. 9 - Draw the conjugate acid of each base. a. Br- b....Ch. 9 - Draw the conjugate base of each acid. HNO2 NH4+...Ch. 9 - Draw the conjugate base of each acid. H3O+ H2Se...Ch. 9 - Prob. 29PCh. 9 - Prob. 30PCh. 9 - Prob. 31PCh. 9 - Prob. 32PCh. 9 - Label the conjugate acid-base pairs in each...Ch. 9 - Label the conjugate acid-base pairs in each...Ch. 9 - Prob. 35PCh. 9 - Prob. 36PCh. 9 - Fill in the missing product in each acid-base...Ch. 9 - Fill in the missing product in each acid-base...Ch. 9 - Prob. 39PCh. 9 - Write the equation for the acid-base reaction that...Ch. 9 - Prob. 41PCh. 9 - Which diagram represents what happens when HCN...Ch. 9 - Prob. 43PCh. 9 - Prob. 44PCh. 9 - Prob. 45PCh. 9 - Use the data in and 9.2 and 9.3 to label the...Ch. 9 - Prob. 47PCh. 9 - Which acid, A or B, is stronger in each part? a. B...Ch. 9 - Fill in the missing terms (strong or weak) and...Ch. 9 - Fill in the missing terms (strong or weak) and...Ch. 9 - For each pair of acids: [1] Label the stronger...Ch. 9 - For each pair of acids: [1] Label the stronger...Ch. 9 - Prob. 53PCh. 9 - Prob. 54PCh. 9 - Prob. 55PCh. 9 - Calculate Ka forthe weak acid HA dissolved in...Ch. 9 - Prob. 57PCh. 9 - Label the acid in the reactants and the conjugate...Ch. 9 - Prob. 59PCh. 9 - Prob. 60PCh. 9 - Prob. 61PCh. 9 - Prob. 62PCh. 9 - Calculate the value of [OH-] from the given and...Ch. 9 - Calculate the value of [OH-] from the given [H3O+]...Ch. 9 - Calculate the value of [OH-] from the given [HO-]...Ch. 9 - Calculate the value of [H3O+] from the given [OH-]...Ch. 9 - Prob. 67PCh. 9 - Prob. 68PCh. 9 - Prob. 69PCh. 9 - Complete the following table with the needed...Ch. 9 - Prob. 71PCh. 9 - Prob. 72PCh. 9 - Prob. 73PCh. 9 - If pancreaticfluids have a pH of 8.2, calculate...Ch. 9 - Calculate the concentrations of H3O+ and OH in the...Ch. 9 - Prob. 76PCh. 9 - Prob. 77PCh. 9 - Prob. 78PCh. 9 - Prob. 79PCh. 9 - Prob. 80PCh. 9 - Write a balanced equation for each reaction. a....Ch. 9 - Prob. 82PCh. 9 - Prob. 83PCh. 9 - Prob. 84PCh. 9 - Prob. 85PCh. 9 - Prob. 86PCh. 9 - Prob. 87PCh. 9 - Prob. 88PCh. 9 - Whatisthe molarityofanaceticacid (CH3COOH)...Ch. 9 - What is the molarity of an H2SO4 solution if 18.5...Ch. 9 - How many milliliters of 1.0MNaOH solution are...Ch. 9 - How many milliliters of 2.0MNaOH solution are...Ch. 9 - Prob. 93PCh. 9 - Prob. 94PCh. 9 - Prob. 95PCh. 9 - Prob. 96PCh. 9 - Prob. 97PCh. 9 - Prob. 98PCh. 9 - Using the Ka values in Table9.6, calculate the pH...Ch. 9 - Using the Ka values in Table9.6, calculate the pH...Ch. 9 - Calculate the pH of an acetic acid/acetate buffer...Ch. 9 - Calculate the pH of a bicarbonate/carbonate buffer...Ch. 9 - Why is the pH of unpolluted rainwater lower than...Ch. 9 - The optimum pH of a swimming pool is 7.50....Ch. 9 - When an Individual hyperventilates, he is told to...Ch. 9 - A sample of rainwater has a pH of 4.18. (a)...Ch. 9 - How is CO2 concentration related to the pH of the...Ch. 9 - Explain why a lake on a bed of limestone is...Ch. 9 - Prob. 109CPCh. 9 - Prob. 110CP
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- What is meant by the capacity of a buffer? Describe a buffer with low capacity and the same buffer with greater capacity.arrow_forwardTwo samples of 1.00 M HCl of equivalent volumes are prepared. One sample is titrated to the equivalence point with a 1.00 M solution of sodium hydroxide, while the other sample is titrated to the equivalence point with a 1.00 M solution of calcium hydroxide. a Compare the volumes of sodium hydroxide and calcium hydroxide required to reach the equivalence point for each titration. b Determine the pH of each solution halfway to the equivalence point. c Determine the pH of each solution at the equivalence point.arrow_forwardIdentify each pair that could form a buffer. (a) NaOH and NaCl (b) NaOH and NH3 (c) Na3PO4 and Na2HPO4arrow_forward
- A solution made up of 1.0 M NH3 and 0.50 M (NH4)2SO4 has a pH of 9.26. a Write the net ionic equation that represents the reaction of this solution with a strong acid. b Write the net ionic equation that represents the reaction of this solution with a strong base. c To 100. mL of this solution, 10.0 mL of 1.00 M HCl is added. How many moles of NH3 and NH4+ are present in the reaction system before and after the addition of the HCl? What is the pH of the resulting solution? d Why did the pH change only slightly upon the addition of HCl?arrow_forwardBriefly describe how a buffer solution can control the pH of a solution when strong acid is added and when strong base is added. Use NH3/NH4Cl as an example of a buffer and HCl and NaOH as the strong acid and strong base.arrow_forwardFollow the directions of Question 64. Consider two beakers: Beaker A has a weak acid(K a=1105). Beaker B has HCI. The volume and molarity of each acid in the beakers are the same. Both acids are to be titrated with a 0.1 M solution of NaOH. (a) Before titration starts (at zero time), the pH of the solution in Beaker A is the pH of the solution in Beaker B. (b) At half-neutralization (halfway to the equivalence point), the pH of the solution in Beaker A the pH of the solution in Beaker B. (c) When each solution has reached its equivalence point, the pH of the solution in Beaker A the pH of the solution in Beaker B. (d) At the equivalence point, the volume of NaOH used to titrate HCI in Beaker B the volume of NaOH used to titrate the weak acid in Beaker A.arrow_forward
- Identify each pair that could form a buffer. (a) HCl and CH3COOH (b) NaH2PO4 and Na2HPO4 (c) H2CO3 and NaHCO3arrow_forwardYou are given the following acidbase titration data, where each point on the graph represents the pH after adding a given volume of titrant (the substance being added during the titration). a What substance is being titrated, a strong acid, strong base, weak acid, or weak base? b What is the pH at the equivalence point of the tiration? c What indicator might you use to perform this titration? Explain.arrow_forwarda Draw a pH titration curve that represents the titration of 50.0 mL of 0.10 M NH3 by the addition of 0.10 M HCl from a buret. Label the axes and put a scale on each axis. Show where the equivalence point and the buffer region are on the titration curve. You should do calculations for the 0%, 30%, 50%, and 100% titration points. b Is the solution neutral, acidic, or basic at the equivalence point? Why?arrow_forward
- A quantity of 0.15 M hydrochloric acid is added to a solution containing 0.10 mol of sodium acetate. Some of the sodium acetate is converted to acetic acid, resulting in a final volume of 650 mL of solution. The pH of the final solution is 4.56. a What is the molar concentration of the acetic acid? b How many milliliters of hydrochloric acid were added to the original solution? c What was the original concentration of the sodium acetate?arrow_forwardWhich of the following constitute a buffer? A. NH3 and KNO3 B. HCN & NaCN C. HF & NaCl D. NaOH & NaCl Group of answer choices C A & C B A, B and Carrow_forwardbläs 4 Predict whether each of the following pairs of substances could function as a buffer system in aqueous solution. Explain why? a. HCl and NaCI b. HCN and KCN c. HCI and HCN d. NACN and * KCNarrow_forward
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