What happens to the concentration of hydrogen ions in a solution as you move from 7 down the ph scale toward 0?
a. the hydrogen ion concentration decreases, and the hydroxide ions increase.
b. the hydrogen ion concentration doubles between the values 7 and 0.
c. the hydrogen ion concentration increases 10-fold with each 1-point jump.
d. the hydrogen ion concentration decreases by half with each 1-point jump

The correct answer is c. The hydrogen ion concentration increases 10-fold with each 1-point jump.

Explanation:

According to the pH of a substance, it can be determined as acid, base or neutral substance. A neutral substance have pH 7, an acidic substance has pH below 7 and a basic substance has pH above 7

pH is determined as the -log[H+] so pH is negative logarithm of base 10 of hydrogen ions. This means if there is a change in pH in one unit the pH concentration will change by 10 fold.

A decrease in pH means more hydrogen ion and an increase of pH means less hydrogen ions. Therefore if we move from 7 down the pH scale toward 0 the concentration of hydrogen ions in a solution increases 10-fold with each 1-point jump.

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