The $pH$ of a solution having $[OH^{-}] = 10^{-7} \ M$ is

If the $pH$ of a soft drink is $3.7$,what is the concentration of hydrogen ions?

In a solution of acid,the $H^{+}$ concentration is $10^{-10} \ M$. The $pH$ of this solution will be:

If the $pH$ of an aqueous solution is $6$,then the concentration of $OH^{-}$ in the solution will be ...............

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 $pH$ in the stomach is approximately: