Introductory Chemistry: A Foundation
8th Edition
ISBN: 9781285199030
Author: Steven S. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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Textbook Question
Chapter 16, Problem 86AP
. When sodium hydroxide, NaOH, is added dropwise to a buffered solution, the _______ component of the butter consumes the added hydroxide ion.
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Students have asked these similar questions
The function of the acetate ion in an acetate buffer is to react with added ______ (acids or bases).
The acetic acid/acetate buffer system is a common buffer used in the laboratory.
Write the equilibrium equation for the acetic acid/acetate buffer system. The formula of acetic acid is CH3CO2H
.
equilibrium equation:
Which way does the equilibrium shift if more H3O+
is added?
The equilibrium will shift to the left.
The equilibrium will shift to the right.
The equilibrium will not change.
What will happen if you add a small amount of KOH to a solution containing acetic
acid and potassium acetate?
The concentration of acetate ion will increase and the concentration of acetic acid will
decrease.
O The concentration of acetate ion will decrease and the concentration of acetic acid will
increase.
O The concentration of hydronium ions will increase significantly.
O The concentration of hydroxide ions will increase significantly..
pH will drop significantly
pH will increase significantly
Chapter 16 Solutions
Introductory Chemistry: A Foundation
Ch. 16.1 - Exercise 16.1 Which of the following represent...Ch. 16.2 - Vinegar contains acetic acid and is used in salad...Ch. 16.3 - Exercise 16.2 Calculate [H+] in a solution in...Ch. 16.4 - Prob. 16.3SCCh. 16.4 - Prob. 1CTCh. 16.4 - Prob. 16.4SCCh. 16.4 - Exercise 16.5 The pH of rainwater in a polluted...Ch. 16.4 - Exercise 16.6 The pOH of a liquid drain cleaner...Ch. 16.5 - Exercise 16.7 Calculate the pH of a solution of...Ch. 16 - You are asked for the H+ concentration in a...
Ch. 16 - Explain why Cl- does not affect the pH of an...Ch. 16 - Write the general reaction for an acid acting in...Ch. 16 - Differentiate among the terms concentrated,...Ch. 16 - What is meant by “pH”? True or false: A strong...Ch. 16 - Consider two separate solutions: one containing a...Ch. 16 - Prob. 7ALQCh. 16 - Prob. 8ALQCh. 16 - Stanley’s grade-point average (GPA) is 3.28. What...Ch. 16 - Prob. 10ALQCh. 16 - . Mixing together aqueous solutions of acetic acid...Ch. 16 - Prob. 12ALQCh. 16 - . Consider the equation:...Ch. 16 - . Choose the answer that best completes the...Ch. 16 - Prob. 15ALQCh. 16 - . The following figures are molecular-level...Ch. 16 - Prob. 17ALQCh. 16 - What are some physical properties that...Ch. 16 - Write an equation showing how HCl(g) behaves as an...Ch. 16 - Prob. 3QAPCh. 16 - How do the components of a conjugate acid—base...Ch. 16 - 5. Given the general equation illustrating the...Ch. 16 - According to Arrhenius, ____________ produce...Ch. 16 - Which of the following do not represent a...Ch. 16 - Which of the following do not represent a...Ch. 16 - In each of the following chemical equations,...Ch. 16 - . In each of the following chemical equations,...Ch. 16 - . Write the conjugate acid for each of the...Ch. 16 - . Write the conjugate acid for each of the...Ch. 16 - Prob. 13QAPCh. 16 - . Write the conjugate base for each of the...Ch. 16 - . Write a chemical equation showing how each of...Ch. 16 - . Write a chemical equation showing how each of...Ch. 16 - . What does it mean to say that an acid is strong...Ch. 16 - Prob. 18QAPCh. 16 - . How is the strength of an acid related to the...Ch. 16 - . A strong acid has a weak conjugate base, whereas...Ch. 16 - . Write the formula for the hydronium ion. Write...Ch. 16 - Prob. 22QAPCh. 16 - . Organic acids contain the carboxyl group Using...Ch. 16 - Prob. 24QAPCh. 16 - 25. Which of the following acids have relatively...Ch. 16 - . The “Chemistry in Focus” segment Plants Fight...Ch. 16 - . Water is the most common amphoteric substance,...Ch. 16 - . Anions containing hydrogen (for example. HCO3and...Ch. 16 - . What is meant by the iou-product constant for...Ch. 16 - . What happens to the hydroxide ion concentration...Ch. 16 - Prob. 31QAPCh. 16 - Prob. 32QAPCh. 16 - . Calculate the [OH-] in each of the following...Ch. 16 - . Calculate the [OH-] in each of the following...Ch. 16 - 35. For each pair of concentrations, tell which...Ch. 16 - Prob. 36QAPCh. 16 - . Why do scientists tend to express the acidity of...Ch. 16 - . Using Fig. 16.3, list the approximate pH value...Ch. 16 - . For a hydrogen ion concentration of 2.33106M,...Ch. 16 - . The “Chemistry in Focus” segment Garden-Variety...Ch. 16 - . Calculate the pH corresponding to each of the...Ch. 16 - Prob. 42QAPCh. 16 - Prob. 43QAPCh. 16 - Prob. 44QAPCh. 16 - Prob. 45QAPCh. 16 - Calculate the pOH value corresponding to each of...Ch. 16 - . For each hydrogen ion concentration listed,...Ch. 16 - . For each hydrogen ion concentration listed,...Ch. 16 - . Calculate the hydrogen ion concentration, in...Ch. 16 - Prob. 50QAPCh. 16 - . Calculate the hydrogen ion concentration, in...Ch. 16 - . Calculate the hydrogen ion concentration, in...Ch. 16 - . Calculate the pH of each of the following...Ch. 16 - Prob. 54QAPCh. 16 - 55. When 1 mole of gaseous hydrogen chloride is...Ch. 16 - . A bottle of acid solution is labeled “3 M HNO3.”...Ch. 16 - . Calculate the hydrogen ion concentration and the...Ch. 16 - . Calculate the pH of each of the following...Ch. 16 - . What characteristic properties do buffered...Ch. 16 - Prob. 60QAPCh. 16 - . Which component of a buffered solution is...Ch. 16 - Prob. 62QAPCh. 16 - . Which of the following combinations would act as...Ch. 16 - . A buffered solution is prepared containing...Ch. 16 - . The concepts of acid-base equilibria were...Ch. 16 - . Strong buses are bases that completely ionize in...Ch. 16 - Which of the following conditions indicate an...Ch. 16 - Which of the following conditions indicate a basic...Ch. 16 - Prob. 69APCh. 16 - Prob. 70APCh. 16 - Prob. 71APCh. 16 - Prob. 72APCh. 16 - Prob. 73APCh. 16 - Prob. 74APCh. 16 - 75. A conjugate acid-base pair Consists of two...Ch. 16 - . Acetate ion, C2H3O2- , has a stronger affinity...Ch. 16 - Prob. 77APCh. 16 - Prob. 78APCh. 16 - Prob. 79APCh. 16 - Prob. 80APCh. 16 - Prob. 81APCh. 16 - Prob. 82APCh. 16 - Prob. 83APCh. 16 - Prob. 84APCh. 16 - . A(n) _________ solution contains a conjugate...Ch. 16 - . When sodium hydroxide, NaOH, is added dropwise...Ch. 16 - . When hydrochloric acid, HCI. is added dropwise...Ch. 16 - . The following are representations of acid-base...Ch. 16 - . In each of the following chemical equations,...Ch. 16 - Prob. 90APCh. 16 - . Write the conjugate base for each of the...Ch. 16 - Prob. 92APCh. 16 - Prob. 93APCh. 16 - . Calculate [H+] in each of the following...Ch. 16 - Prob. 95APCh. 16 - . Calculate the pH corresponding to each of the...Ch. 16 - Prob. 97APCh. 16 - Prob. 98APCh. 16 - Prob. 99APCh. 16 - . For each hydrogen or hydroxide ion concentration...Ch. 16 - . Calculate the hydrogen ion concentration, in...Ch. 16 - Prob. 102APCh. 16 - Prob. 103APCh. 16 - Prob. 104APCh. 16 - . Write the formulas for three combinations of...Ch. 16 - . Choose pairs in which the species listed first...Ch. 16 - . Complete the table for each of the following...Ch. 16 - . Consider 0.25 M solutions of the following...
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- Part C – Acid–base and solubility equilibria 1. Rinse 4 regular size test tubes and a 10 mL measuring cylinder thoroughly with water. Number the test-tubes from 1 to 4 in a test tube rack. 2. Into each of test tubes 1 – 3 put a small amount of solid benzoic acid (put the same amount – about the size of a pea – in each test tube). 3. Add 2 mL (use the measuring cylinder) of water to tube 1 and shake to mix the contents. 4. Add 2 mL (measuring cylinder) of 2 M HNO3 to tube 2 and shake to mix the contents. 5. Rinse the measuring cylinder with water, then use it to add 2 mL of 2 M NaOH to tube 3 and shake for about 10 seconds to mix the contents. Rinse the measuring cylinder. 6. Pour about half of the solution from tube 3 into tube 4, than add 2 mL of 2 M HNO3 to tube 4. 7. Allow the test tubes to stand for 2 or 3 minutes then record the appearance of the mixtures in each test tube. 8. Answer the questions on the results page relating to this equilibrium system.arrow_forwardCarbonic acid and sodium bicarbonate act as buffers in the blood. When a small amount of acid is added to this buffer, the H+ ions are used up as they combine with the bicarbonate ions. When this happens, the pH of the blood _____ ?arrow_forwardSome chemical compounds are listed in the first column of the table below. Each compound is soluble in water. Imagine that a few tenths of a mole of each compound is dissolved in a liter of water. The important chemical speci written in the second column of the table. Use the checkboxes to classify each compound. type of compound (check all that apply) important species present when dissolved in water lonic molecular strong weak strong weak base compound acid acid base C,H,NH, c,H,NH, OH , C,H,NH,, H,0 HC,H,0, H,0", C,H,0,, HC,H,0,, H,0 КОН к", он , н,о H BrO4 H,0", Bro,, H,0arrow_forward
- What will happen to a buffer if you dilute it by adding water? ● Buffer concentration will stay the same and the pH will stay the same. Buffer concentration will stay the same and the pH will decrease. Buffer concentration will increase and the pH will stay the same? Buffer concentration will stay the same and the pH will increase. Buffer concentration will decrease and the pH will stay the same.arrow_forwardYou could make an acetate buffer by titrating a solution of sodium acetate with ______ to reach the desired pH (HCl or NaOH).arrow_forwardConsider a buffer solution made from acetic acid (CH3COOH) and sodium acetate (NaCH3COO). If more NaCH3COO is added to the buffer solution, how will the concentrations of the species in the solution change? CH3COOH concentration: [Select] CH3COO concentration: [Select] hydroxide ion concentration: [Select] hydronium ion concentration: [Select] [ Select] increase decrease stay the same Question 6arrow_forward
- qarrow_forwardProvide an example of two substances that can be mixed together to create a buffer.arrow_forwardA small amount of HCl(aq) is added to this buffer system 1- NO3 + H₂O OH¹ + HNO3 the pH rises only a little since the equilibrium shifts left the pH does not change since the buffer uses up all the HCl(aq) the pH drops only a little since the equilibrium shifts right the pH drops only little since the equilibrium shifts left the pH rises only a little since the equilibrium shifts rightarrow_forward
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