Based on the definition of logarithms, what is the difference in hydrogen ion concentration between a substance with a pH of 2 and a substance with a pH of 3?

A substance with a pH of 2 has a 10 times higher concentration of H + than a substance with a pH of 3.

A substance with a pH of 3 has a 10 times higher concentration of H + than a substance with a pH of 2.

A substance with a pH of 2 has a 100 times higher concentration of H + ions than a substance with a pH of 3.

A substance with a pH of 3 has a 100 times higher concentration of H + ions than a substance with a pH of 2.

Question

Chemistry

Kenneth Swanson

14 May, 20:59

Based on the definition of logarithms, what is the difference in hydrogen ion concentration between a substance with a pH of 2 and a substance with a pH of 3?

A substance with a pH of 2 has a 10 times higher concentration of H + than a substance with a pH of 3.

A substance with a pH of 3 has a 10 times higher concentration of H + than a substance with a pH of 2.

A substance with a pH of 2 has a 100 times higher concentration of H + ions than a substance with a pH of 3.

A substance with a pH of 3 has a 100 times higher concentration of H + ions than a substance with a pH of 2.

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Answers (1)

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Yuliana Tate · Answer 1

The pH scale is a negative logarithmic scale, which means that it changes by factors of 10. Negative exponents are converted into fractions, so something with a pH of 1 has an H + concentration of 10^-1. or 1/10, or 0.1. A pH of 2 represents 10^-2, 1/100, or 0.01.

Therefore, a solution with a pH of 2 is 10 times more concentrated, in terms of H+, than a solution with a pH of 3.

The first option.