General, Organic, and Biological Chemistry
7th Edition
ISBN: 9781285853918
Author: H. Stephen Stoker
Publisher: Cengage Learning
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Textbook Question
Chapter 10.16, Problem 1QQ
Determining the concentration of an acid using an acid–base titration involves completely reacting a measured volume of the acid with a measured volume of
- a. base of unknown concentration
- b. base of known concentration
- c. indicator of known concentration
- d. no correct response
Expert Solution & Answer
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Please answer 1,2,3,4 thankyou
1. What effect will addition of sodium acetate have on the pH of a solution of acetic acid?
a. increase the pH
b. decrease the pH
c. no effect
d. cannot tell from information given
Answer and brief explanation:
2. A buffer solution may be a mixture of
a. a weak acid and its salt
b. a weak base and its salt
c. an excess of a weak acid with a strong base
d. all of the above
Answer and brief explanation:
3. What is common ion effect?
4. Explain the Le Chatelier’s Principle
A weak acid is added to a solution of strong acid (HCl) of unknown concentration.
The concentration of the weak acid is 1.17 M. The Ka is 5.80 × 10-2.
Given that the degree of ionization of the acid is 0.0166, what was concentration of the initial strong acid solution? (0.001)
Correct Answer:3.417
Experiment 1: Preparation and pH of Buffer Solutions
Test Data:
Mass of Sodium Acetate :4.0 g
Volume of Sodium Acetate Solution: 100.00mL
Acetic Acid Concentration (mass percent from label) :4.5%
pH of Prepared Buffer Solutions
Buffer Solution
Acetic Acid; 4.5%
Sodium Acetate Solution
Recorded pH
A
5.0 mL
5.0 mL
4.3
B
5.0 mL
1.0 mL
4.2
C
10.0 mL
1.0 mL
3.4
D
1.0 mL
10.0 mL
5.0
E
1.0 mL
5.0 mL
4.5
Calculations/Results
*Show all work with units. The answers must have the correct units and the correct number of significant figures
Sodium acetate moles 0.049 mol
(molar mass = 82.0 g/mol)
Molarity of sodium acetate = 0.49 M
Concentration of acetic acid (from bottle) =4.5 %
Molarity of acetic acid = 0.75 M
(molar mass = 60.0 g/mol; density of the solution is 1.0 g/mL)
questios
1. What is a buffer? How does a buffer keep pH constant?…
Chapter 10 Solutions
General, Organic, and Biological Chemistry
Ch. 10.1 - In an Arrhenius acidbase theory context, the...Ch. 10.1 - In an Arrhenius acidbase theory context, the...Ch. 10.1 - Which of the following statements concerning...Ch. 10.2 - Prob. 1QQCh. 10.2 - For the chemical reaction N3 + H2O HN3 + OH, the...Ch. 10.2 - The chemical formula for the conjugate acid of ClO...Ch. 10.2 - Which of the following is a conjugate acidbase...Ch. 10.2 - Prob. 5QQCh. 10.3 - Which of the following is not a polyprotic acid?...Ch. 10.3 - For the triprotic acid H3PO4, the reactant in the...
Ch. 10.3 - Prob. 3QQCh. 10.4 - In which of the following pairs of acids are both...Ch. 10.4 - Prob. 2QQCh. 10.4 - Prob. 3QQCh. 10.5 - Acid ionization constants give information about...Ch. 10.5 - Prob. 2QQCh. 10.5 - Which of the following is the strongest acid? a....Ch. 10.5 - Prob. 4QQCh. 10.6 - Which of the following is an inappropriate...Ch. 10.6 - Prob. 2QQCh. 10.6 - In which of the following pairs of substances are...Ch. 10.7 - Prob. 1QQCh. 10.7 - Prob. 2QQCh. 10.7 - Prob. 3QQCh. 10.8 - Prob. 1QQCh. 10.8 - Prob. 2QQCh. 10.8 - What is the [OH] in an aqueous solution in which...Ch. 10.8 - Prob. 4QQCh. 10.8 - Prob. 5QQCh. 10.9 - Prob. 1QQCh. 10.9 - Prob. 2QQCh. 10.9 - Prob. 3QQCh. 10.9 - A solution with a pH of 12.0 is a. weakly acid b....Ch. 10.9 - Prob. 5QQCh. 10.9 - If the pH of a solution increases from 4.0 to 6.0...Ch. 10.9 - Prob. 7QQCh. 10.10 - Prob. 1QQCh. 10.10 - Prob. 2QQCh. 10.11 - Prob. 1QQCh. 10.11 - Prob. 2QQCh. 10.11 - Prob. 3QQCh. 10.12 - Which of the following combinations of substances...Ch. 10.12 - Prob. 2QQCh. 10.12 - Prob. 3QQCh. 10.12 - The chemical reaction that occurs when a HCN/CN...Ch. 10.13 - Prob. 1QQCh. 10.13 - For a buffer where the acid and conjugate base are...Ch. 10.14 - Which of the following statements concerning...Ch. 10.14 - In which of the following pairs of compounds are...Ch. 10.14 - Prob. 3QQCh. 10.15 - How many equivalents of Ca2+ ion are present in a...Ch. 10.15 - Prob. 2QQCh. 10.15 - Prob. 3QQCh. 10.15 - Prob. 4QQCh. 10.16 - Determining the concentration of an acid using an...Ch. 10.16 - Prob. 2QQCh. 10.16 - Prob. 3QQCh. 10 - In Arrhenius acidbase theory, what ion is...Ch. 10 - What term is used to describe the formation of...Ch. 10 - Classify each of the following as a property of an...Ch. 10 - Classify each of the following as a property of an...Ch. 10 - Write equations depicting the behavior of the...Ch. 10 - Write equations depicting the behavior of the...Ch. 10 - Indicate whether the first listed reactant in each...Ch. 10 - Indicate whether the first listed reactant in each...Ch. 10 - Write chemical equations that show the indicated...Ch. 10 - Write chemical equations that show the indicated...Ch. 10 - Indicate whether or not the two members of each of...Ch. 10 - Indicate whether or not the two members of each of...Ch. 10 - Write the formula of each of the following. a....Ch. 10 - Write the formula of each of the following. a....Ch. 10 - Identify the conjugate acidbase pairs associated...Ch. 10 - Identify the conjugate acidbase pairs associated...Ch. 10 - The ion HCO3 is an amphiprotic ion. Write the...Ch. 10 - The ion HPO42 is an amphiprotic ion. Write the...Ch. 10 - Classify each of the following acids as...Ch. 10 - Classify each of the following acids as...Ch. 10 - Prob. 10.21EPCh. 10 - For each of the acids in Problem 10-19 indicate...Ch. 10 - Write chemical equations showing the individual...Ch. 10 - Write chemical equations showing the individual...Ch. 10 - Prob. 10.25EPCh. 10 - The formula for tartaric acid is preferably...Ch. 10 - Pyruvic acid, which is produced in metabolic...Ch. 10 - Oxaloacetic acid, which is produced in metabolic...Ch. 10 - Classify each of the acids in Problem 10-19 as a...Ch. 10 - Classify each of the acids in Problem 10-20 as a...Ch. 10 - For each of the following pairs of acids, indicate...Ch. 10 - For each of the following pairs of acids, indicate...Ch. 10 - For each of the following pairings of acid and...Ch. 10 - For each of the following pairings of acid and...Ch. 10 - The HCl in a 0.10 M HCl solution is 100%...Ch. 10 - The HNO3 in a 0.50 M HNO3 solution is 100%...Ch. 10 - The following four diagrams represent aqueous...Ch. 10 - Using the diagrams shown in Problem 10-37, which...Ch. 10 - Which of the terms weak, strong, monoprotic,...Ch. 10 - Which of the terms weak, strong, monoprotic,...Ch. 10 - Write the acid ionization constant expression for...Ch. 10 - Write the acid ionization constant expression for...Ch. 10 - Prob. 10.43EPCh. 10 - Write the base ionization constant expression for...Ch. 10 - Prob. 10.45EPCh. 10 - Using the acid ionization constant information...Ch. 10 - A 0.00300 M solution of an acid is 12% ionized....Ch. 10 - A 0.0500 M solution of a base is 7.5% ionized....Ch. 10 - Is the monoprotic acid Y or the monoprotic acid Z...Ch. 10 - Is the monoprotic acid Y or the monoprotic acid Z...Ch. 10 - Classify each of the following substances as an...Ch. 10 - Classify each of the following substances as an...Ch. 10 - Prob. 10.53EPCh. 10 - Indicate whether or not both members of each of...Ch. 10 - Prob. 10.55EPCh. 10 - Write a balanced equation for the dissociation...Ch. 10 - Indicate whether each of the following reactions...Ch. 10 - Indicate whether each of the following reactions...Ch. 10 - Without writing an equation, specify the molecular...Ch. 10 - Without writing an equation, specify the molecular...Ch. 10 - Write a balanced chemical equation to represent...Ch. 10 - Write a balanced chemical equation to represent...Ch. 10 - Prob. 10.63EPCh. 10 - Write a balanced molecular equation for the...Ch. 10 - Prob. 10.65EPCh. 10 - What is the molar hydronium ion concentration in...Ch. 10 - Indicate whether each of the solutions in Problem...Ch. 10 - Prob. 10.68EPCh. 10 - Prob. 10.69EPCh. 10 - Prob. 10.70EPCh. 10 - Prob. 10.71EPCh. 10 - Indicate whether each of the solutions in Problem...Ch. 10 - Selected information about five solutions, each at...Ch. 10 - Selected information about five solutions, each at...Ch. 10 - Calculate the pH of solutions with the following...Ch. 10 - Calculate the pH of solutions with the following...Ch. 10 - Calculate the pH of solutions with the following...Ch. 10 - Calculate the pH of solutions with the following...Ch. 10 - What is the [H3O+] value in solutions with each of...Ch. 10 - What is the [H3O+] value in solutions with each of...Ch. 10 - Prob. 10.81EPCh. 10 - What is the molar hydronium ion concentration in...Ch. 10 - Prob. 10.83EPCh. 10 - Indicate whether each of the following samples is...Ch. 10 - Selected information about five solutions, each at...Ch. 10 - Prob. 10.86EPCh. 10 - Consider the following four solutions: (1) apple...Ch. 10 - Consider the following four biological solutions:...Ch. 10 - For each of the following pairs of solutions,...Ch. 10 - Prob. 10.90EPCh. 10 - Calculate the pKa value for each of the following...Ch. 10 - Calculate the pKa value for each of the following...Ch. 10 - Acid A has a pKa value of 4.23, and acid B has a...Ch. 10 - Acid A has a pKa value of 5.71, and acid B has a...Ch. 10 - If a weak acid has a pKa value of 8.73, what is...Ch. 10 - If a weak acid has a pKa value of 7.21, what is...Ch. 10 - Classify each of the following salts as a strong...Ch. 10 - Classify each of the following salts as a strong...Ch. 10 - Prob. 10.99EPCh. 10 - Identify the ion (or ions) present in each of the...Ch. 10 - Prob. 10.101EPCh. 10 - Prob. 10.102EPCh. 10 - Both ions in the salt ammonium cyanide (NH4CN)...Ch. 10 - Both ions in the salt ammonium acetate (NH4C2H3O2)...Ch. 10 - Arrange the following 0.10 M aqueous solutions in...Ch. 10 - Arrange the following 0.10 M aqueous solutions in...Ch. 10 - Predict whether each of the following pairs of...Ch. 10 - Predict whether each of the following pairs of...Ch. 10 - Identify the two active species in each of the...Ch. 10 - Identify the two active species in each of the...Ch. 10 - Prob. 10.111EPCh. 10 - Write an equation for each of the following...Ch. 10 - Prob. 10.113EPCh. 10 - Prob. 10.114EPCh. 10 - Prob. 10.115EPCh. 10 - A buffer solution has a pH value of 9.8. Which...Ch. 10 - The following four diagrams represent aqueous...Ch. 10 - Using the diagrams shown in Problem 10-117, which...Ch. 10 - Identify the buffer system(s)the conjugate...Ch. 10 - Identify the buffer system(s)the conjugate...Ch. 10 - Prob. 10.121EPCh. 10 - Prob. 10.122EPCh. 10 - What is the pH of a buffer that is 0.230 M in a...Ch. 10 - What is the pH of a buffer that is 0.250 M in a...Ch. 10 - What is the pH of a buffer that is 0.150 M in a...Ch. 10 - What is the pH of a buffer that is 0.175 M in a...Ch. 10 - Classify each of the following compounds as a...Ch. 10 - Classify each of the following compounds as a...Ch. 10 - Indicate whether solutions of each of the...Ch. 10 - Indicate whether solutions of each of the...Ch. 10 - How many ions, per formula unit, are produced when...Ch. 10 - How many ions, per formula unit, are produced when...Ch. 10 - Write a balanced chemical equation for the...Ch. 10 - Prob. 10.134EPCh. 10 - Four different substances of the generalized...Ch. 10 - Which of the diagrams in Problem 10-135 represents...Ch. 10 - Indicate the number of equivalents in each of the...Ch. 10 - Indicate the number of equivalents in each of the...Ch. 10 - Indicate the number of equivalents in each of the...Ch. 10 - Indicate the number of equivalents in each of the...Ch. 10 - A solution contains 48 mEq of Ca2+ ion. Based on...Ch. 10 - Prob. 10.142EPCh. 10 - Prob. 10.143EPCh. 10 - A solution is 0.0030 M in H2PO4 ion. What is this...Ch. 10 - Prob. 10.145EPCh. 10 - Prob. 10.146EPCh. 10 - How many mEq of HCO3 are present in a solution...Ch. 10 - How many mEq of Ca2+ are present in a solution...Ch. 10 - Determine the molarity of a NaOH solution when...Ch. 10 - Determine the molarity of a KOH solution when each...
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- Experiment 1: Preparation and pH of Buffer Solutions Test Data: Mass of Sodium Acetate :4.0 g Volume of Sodium Acetate Solution: 100.00mL Acetic Acid Concentration (mass percent from label) :4.5% pH of Prepared Buffer Solutions Buffer Solution Acetic Acid; 4.5% Sodium Acetate Solution Recorded pH A 5.0 mL 5.0 mL 4.3 B 5.0 mL 1.0 mL 4.2 C 10.0 mL 1.0 mL 3.4 D 1.0 mL 10.0 mL 5.0 E 1.0 mL 5.0 mL 4.5 /Results *Show all work with units. The answers must have the correct units and the correct number of significant figures Sodium acetate moles 0.049 mol (molar mass = 82.0 g/mol) Molarity of sodium acetate = 0.49 M Concentration of acetic acid (from bottle) =4.5 % Molarity of acetic acid = 0.75 M (molar mass = 60.0 g/mol; density of the solution is 1.0 g/mL) Work: pH (calculated and theoretical) of prepared buffer solutions Show all work with units The…arrow_forwardDuring the titration of acetic acid solution with standard NaOH using phenolphthalein, the end point was read when the color of the solution was red. How does the reported value of the molarity of acid compare with the actual value? a. M reported > M actual b. M reported < M actual c. M reported = M actual d. no effectarrow_forward9.4 mL of 2.4 M HCI is used to titrate 12.6 mL of NH3 its endpoint. What is the initial molar concentration of the NH3? answer to two significant figures.arrow_forward
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