If $20 \ mL$ of an acidic solution of $pH$ $3$ is diluted to $100 \ mL$,the $H^{+}$ ion concentration will be

$pH$ of a solution is $5$. Its hydroxyl ion concentration is

What is the $pH$ of a solution containing $2.2 \times 10^{-6} \ M$ hydrogen ions?

The ionic product of water increases with which of the following changes?

Calculate the hydrogen ion concentration in the following biological fluids whose $pH$ are given below:
$(a)$ Human muscle-fluid,$6.83$
$(b)$ Human stomach fluid,$1.2$
$(c)$ Human blood,$7.38$
$(d)$ Human saliva,$6.4$

As the temperature increases,the $pH$ of a $KOH$ solution