Chapter 1. Chapter 1

Problem-Solving Video Assessment

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Chapter 1 Problem-Solving Video Assessment

Acetic acid is added to water until the pH reaches 2.5. What is the concentration of acetate in this solution?

1.78 x 10^-5 M

0.0032 M

0.40 M

0.57 M

316 M

_feedback_correct: Correct. _feedback_incorrect: Incorrect.

How much acetic acid (pK_a = 4.75) must be added to water to bring the pH to 2.5?

0.0032 M

0.0089 M

0.40 M

0.57 M

71.53 M

_feedback_correct: Correct. _feedback_incorrect: Incorrect.

How much ammonia (pK_b = 4.74) must be added to water to bring the pH to 11?

1.02 x 10^-11 M

1.82 x 10^-5 M

0.001 M

0.056 M

1820 M

_feedback_correct: Correct. _feedback_incorrect: Incorrect.

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Introduction