alleryThe pH of a solution is defined as the negative logarithm to base:
A20
B30
C40
D10
Answer & Solution
Correct answer: D. 10
1. The scale compresses a wide range of concentrations.
2. pH is the negative logarithm to base 10 of the hydrogen ion activity.
3. So the correct answer is 10.
_Source: syllabus Chemistry, Ch 7 'Equilibrium'_
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