AP Chemistryeasymcq1 pt
How many times greater is [H⁺] in a solution of pH 3 than in a solution of pH 5?
A.2 times
B.10 times
C.1000 times
D.100 times
Explanation
Core Concept
Each pH unit is a factor of ten because pH = -log[H⁺]. Going from pH 5 to pH 3 spans two units, so [H⁺] rises by 10 × 10 = 100 times. The pH scale is logarithmic, never linear.
Correct Answer
D100 times
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