AnswersFoothill-B Period-Chemistry-2627BLab: Measuring pH — Unit testQuestion 16
16
QuizMultiple Choice

Lab: Measuring pH — Unit test

Question 16 • Foothill-B Period-Chemistry-26/27B

Which description correctly characterizes the acidity or basicity of a solution?

Answer
A
The higher the pH is, the more the hydroxide ion concentration decreases and the more acidic the solution becomes.
B
The higher the pH is, the more the hydroxide ion concentration increases and the more basic the solution becomes.
C
The lower the pH is, the more the hydronium ion concentration decreases and the more acidic the solution becomes.
D
The lower the pH is, the more the hydronium ion concentration increases and the more basic the solution becomes.

Explanation

As pH increases, a solution becomes more basic. In water, this corresponds to an increase in hydroxide ion concentration. Therefore, the correct description is that higher pH means more hydroxide ions and a more basic solution.

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Lab: Measuring pH