When $NaCl$ is dissolved in water,the sodium ion undergoes ......... .

The ionic product of water is equal to .......

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,$6.4$

The hydrogen ion concentration in a given solution is $6 \times 10^{-4} \ M$. Its $pH$ will be

What is the concentration of $H_3O^{+}$ ions in a solution having $pOH$ value $9$?

The $pH$ of a solution is increased from $3$ to $6$. Its ${H^{+}}$ ion concentration will be