Chemistry
Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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Question
The pOH of an aqueous solution of 0.532 M caffeine (a weak base with the formula \( \text{C}_8\text{H}_{10}\text{N}_4\text{O}_2 \)) is \(\_\_\_\_\_\_\_\_\_\_\_\_\_\). (Assume that \( K_b (\text{C}_8\text{H}_{10}\text{N}_4\text{O}_2) = 4.10 \times 10^{-4} \).)
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Transcribed Image Text:The pOH of an aqueous solution of 0.532 M caffeine (a weak base with the formula \( \text{C}_8\text{H}_{10}\text{N}_4\text{O}_2 \)) is \(\_\_\_\_\_\_\_\_\_\_\_\_\_\). (Assume that \( K_b (\text{C}_8\text{H}_{10}\text{N}_4\text{O}_2) = 4.10 \times 10^{-4} \).)
The text reads: "The pH of an aqueous solution of 0.0959 M ammonium perchlorate, \( \text{NH}_4\text{ClO}_4 \, (\text{aq}), \) is [_____]. (Assume that \( K_b(\text{NH}_3) = 1.80 \times 10^{-5}. \)) This solution is [dropdown menu]." Explanation: - The question asks for the pH calculation of a 0.0959 M ammonium perchlorate solution. - It provides the base dissociation constant (\( K_b \)) for ammonia (\( \text{NH}_3 \)) as \( 1.80 \times 10^{-5} \). - There is a blank space to fill in the pH value. - There is a dropdown menu indicating the nature of the solution (likely options such as acidic, neutral, or basic).
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Transcribed Image Text:The text reads: "The pH of an aqueous solution of 0.0959 M ammonium perchlorate, \( \text{NH}_4\text{ClO}_4 \, (\text{aq}), \) is [_____]. (Assume that \( K_b(\text{NH}_3) = 1.80 \times 10^{-5}. \)) This solution is [dropdown menu]." Explanation: - The question asks for the pH calculation of a 0.0959 M ammonium perchlorate solution. - It provides the base dissociation constant (\( K_b \)) for ammonia (\( \text{NH}_3 \)) as \( 1.80 \times 10^{-5} \). - There is a blank space to fill in the pH value. - There is a dropdown menu indicating the nature of the solution (likely options such as acidic, neutral, or basic).
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