Question

The $pH$ of a solution is defined as the:

• A. negative logarithm of the magnitude of hydrogen ion concentration
• B. logarithm of reciprocal of magnitude of hydrogen ion concentration
• C. power raised on a $10$ in order to express $\left[H^{+}\right]$ ion concentration
• D. none of the above

Answer 1

Answer: (A), (B)

The correct options are
A negative logarithm of the magnitude of hydrogen ion concentration
B logarithm of reciprocal of magnitude of hydrogen ion concentration

The pH of a solution is a measure of the molar concentration of hydrogen ions.

It is defined as the negative logarithm of its hydrogen ion ($H^{+}$) concentration.

$pH=-log\left[H^{+}\right]=log\frac{1}{\left[H^{+}\right]}$