a) Consider the first order decomposition reaction: C → A + B By analyzing the concentration of C, you determine that it requires 10 minutes for the concentration to be decreased by 50%. What is the rate constant for this reaction? According to this result, how long would it take for the C concentration to be reduced by 90%? b) For the reaction: Zn2+(aq) + 4 OH−(aq) ⇌ Zn(OH)4 2−(aq) The formation constant, Kf, for Zn(OH)4 2− (aq) is 2.0 × 1020 . We add 0.0333 mol of Zn(NO3)2 to 1,000 L of a NaOH solution with a pH of 13.66. The volume remains fixed at 1,000 L. At equilibrium, what are the concentrations of Zn2+(aq), OH−(aq) and Zn(OH)4 2− (aq)? The temperature is 25.0◦C.
a) Consider the first order decomposition reaction: C → A + B By analyzing the concentration of C, you determine that it requires 10 minutes for the concentration to be decreased by 50%. What is the rate constant for this reaction? According to this result, how long would it take for the C concentration to be reduced by 90%? b) For the reaction: Zn2+(aq) + 4 OH−(aq) ⇌ Zn(OH)4 2−(aq) The formation constant, Kf, for Zn(OH)4 2− (aq) is 2.0 × 1020 . We add 0.0333 mol of Zn(NO3)2 to 1,000 L of a NaOH solution with a pH of 13.66. The volume remains fixed at 1,000 L. At equilibrium, what are the concentrations of Zn2+(aq), OH−(aq) and Zn(OH)4 2− (aq)? The temperature is 25.0◦C.
Chemistry
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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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a) Consider the first order decomposition reaction: C → A + B By analyzing the concentration of C, you determine that it requires 10 minutes for the concentration to be decreased by 50%. What is the rate constant for this reaction? According to this result, how long would it take for the C concentration to be reduced by 90%? b) For the reaction: Zn2+(aq) + 4 OH−(aq) ⇌ Zn(OH)4 2−(aq) The formation constant, Kf, for Zn(OH)4 2− (aq) is 2.0 × 1020 . We add 0.0333 mol of Zn(NO3)2 to 1,000 L of a NaOH solution with a pH of 13.66. The volume remains fixed at 1,000 L. At equilibrium, what are the concentrations of Zn2+(aq), OH−(aq) and Zn(OH)4 2− (aq)? The temperature is 25.0◦C.
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