The Ka for acetic acid is 1.8 * 10-5. Which of the following statements best describes the pH of a 0.010 M solution of acetic acid?

The pH is greater than 7 but less than 12.

The pH is greater than 2 but less than 7.

The pH is greater than 0 but less than 2.

The pH is exactly 2.

The pH is exactly 7.

Question

Chemistry

Lili

20 July, 06:07

The Ka for acetic acid is 1.8 * 10-5. Which of the following statements best describes the pH of a 0.010 M solution of acetic acid?

The pH is greater than 7 but less than 12.

The pH is greater than 2 but less than 7.

The pH is greater than 0 but less than 2.

The pH is exactly 2.

The pH is exactly 7.

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Answers (1)

Know the Answer?

Toby Becker · Answer 1

The pH is greater than 2 but less than 7

Explanation:

Acetic acid is an acid, so the pH is less than 7.

If it were a strong acid, the pH would be 2.

However, acetic acid is weak, so the pH is greater than 2 but less than 7 (less precisely, it's also greater than 0 but less than 7).

The Ka for acetic acid is 1.8 * 10-5. Which of the following statements best describes the pH of a 0.010 M solution of acetic acid?The pH is greater than 7 but less than 12.The pH is greater than 2 but less than 7.The pH is greater than 0 but less than 2.The pH is exactly 2.The pH is exactly 7.