Question

Which of these is true about a pH meter?

Answer 1

The pH meter measure the concentration of the hydrogen(+) ion, and the concentration of Hydroxide(-). Hydrogen is acidic, Hydroxide is basic.

The answer is D.

Answer 2

Answer: Option (D) is the correct answer.

Explanation:

An electronic device which is used to measure hydrogen ion activity is known as a pH meter.

That is, a pH meter is useful in detecting or knowing the acidity (due to $H^{+}$ ions) or alkalinity (due to $OH^{-}$ ions) of a solution.

Thus, we can conclude that out of the given options it is true about a pH meter that it can be used in any acid-base titration.