Question

$0.1N$ solution of which of the following has the highest $pH$?

• A. $N{a}_{2}C{O}_3$
• B. $NaHC{O}_3$
• C. $NaOH$
• D. $C{H}_{3}COOH$

Answer 1

Answer: (C)

$NaOH$

We know, higher the acidic character, lower is the $pH$.

Among all the given options, $NaOH$ is the strongest base.

This implies, it has the lowest $pOH$.
$pOH=14-pH$

Therefore, its $pH$ value will be very high.

Option C is correct.