If the pH of a solution is decreased from 9 to 8, it means that the concentration of _____

A) H+ has decreased to one-tenth (1/10 ) what it was at pH 9
B) H+ has doubled compared to what it was at pH 9
C) H+ has increased tenfold (10X) compared to what it was at pH 9
D) OH- has increased tenfold (10X) compared to what it was at pH 9


C

Biology & Microbiology

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