Question

The $pH$ value of a sample of hydrochloric acid is $2$. $pH$ value of this sample when diluted by adding water will be:

• A. less than $2$ but more than $0$
• B. more than $2$ but less than $7$
• C. more than $7$
• D. no change in $pH$.

Answer 1

The correct option is B more than $2$ but less than $7$

$P^k=-\log \left[H^{+}\right]$

On dilution concentration of $\left[H^{+}\right]$ decreases and hence $p^H$ will increase fat it is always acidic do it is less than $7$

$B$ more than $2$ but less than $7$