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Subject Test Chemistry

Question 5 of 13

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SAT Subject Test

The set of lettered choices below refers to multiple questions. Select the one lettered choice that best fits each statement or answers each question. A choice may be used once, more than once, or not at all in each set.

Has the highest pH

Select an Answer

0.1 M compound HCl

Correct Answer: 
No

0.1 M compound NaCl

Correct Answer: 
No

0.1 M compound HC2 H3 O2

Correct Answer: 
No

0.1 M compound CH3 OH

Correct Answer: 
No

0.1 M compound KOH

Correct Answer: 
Yes

To answer this question, you need to understand the pH scale, which is a measure of the hydrogen ion concentration in solution and is defined as pH = negative log[H to the power of plus] end text. The higher the pH, the lower the hydrogen ion concentration and the more basic the solution. Among the choices given above, choice (E) is the most basic solution.

Question Difficulty: 
medium