The hydronium ion concentration in a solution with pH 10 is ________ than the hydronium ion concentration in a solution with pH 13.
A)1,000 times less
B)3 times greater
C)1,000 times greater
D)100 times less

Question

Quizplus · Accepted Answer

The pH scale is logarithmic, meaning each whole pH value below another represents a tenfold increase in acidity (or hydronium ion concentration). Therefore, moving from pH 13 to pH 10 (a difference of 3 pH units) means the hydronium ion concentration is $10^3 = 1,000$ times greater.

The Hydronium Ion Concentration in a Solution with PH 10