Which of these is true about a pH meter?
a. It is inexpensive to use.
b. It measures pH indirectly.
c. It does not require calibration.
d. It can be used in any acid-base titration.
Answer:
d. It can be used in any acid-base titration.
That is, a pH meter is useful in detecting or knowing the acidity (due to ions) or alkalinity (due to 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