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Calculate the pH at the equivalence point for the titration of 0.22 M HCN with 0.22 M NaOH. (K - 4.9 - 10-10 for HCN) Multiple Choice 10.98 1078 10.58 None of the above

Calculate the pH at the equivalence point for the titration of 0.22 M HCN with 0.22 M NaOH. (K - 4.9 - 10-10 for HCN) Multiple Choice 10.98 1078 10.58 None of the above

Chemistry
Chemistry
10th Edition
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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**Calculating pH at the Equivalence Point** **Problem Statement:** Calculate the pH at the equivalence point for the titration of 0.22 M HCN with 0.22 M NaOH. Given that \( K_a = 4.9 \times 10^{-10} \) for HCN. **Options:** 1. 10.98 2. 10.78 3. 10.58 4. None of the above 5. 11.18 **Note:** This is a multiple-choice question. To solve this problem, consider that at the equivalence point of a titration involving a weak acid (HCN) and a strong base (NaOH), the resulting solution is basic. Calculate using the expression for the \([OH^-]\) concentration and the \( K_w\) relation, where \( K_w = 1.0 \times 10^{-14} \).
Transcribed Image Text:**Calculating pH at the Equivalence Point** **Problem Statement:** Calculate the pH at the equivalence point for the titration of 0.22 M HCN with 0.22 M NaOH. Given that \( K_a = 4.9 \times 10^{-10} \) for HCN. **Options:** 1. 10.98 2. 10.78 3. 10.58 4. None of the above 5. 11.18 **Note:** This is a multiple-choice question. To solve this problem, consider that at the equivalence point of a titration involving a weak acid (HCN) and a strong base (NaOH), the resulting solution is basic. Calculate using the expression for the \([OH^-]\) concentration and the \( K_w\) relation, where \( K_w = 1.0 \times 10^{-14} \).
**Multiple Choice** - ( ) 10.98 - ( ) 10.78 - ( ) 10.58 - ( ) None of the above - ( ) 11.18 This image displays a multiple-choice question with numerical options. Five choices are provided, including "None of the above." The layout is typical of digital quizzes or tests, allowing students to select one option. The format helps learners practice selecting accurate answers based on their knowledge or calculations.
Transcribed Image Text:**Multiple Choice** - ( ) 10.98 - ( ) 10.78 - ( ) 10.58 - ( ) None of the above - ( ) 11.18 This image displays a multiple-choice question with numerical options. Five choices are provided, including "None of the above." The layout is typical of digital quizzes or tests, allowing students to select one option. The format helps learners practice selecting accurate answers based on their knowledge or calculations.
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