There are two different solutions, $A$ and $B$. The $pH$ of solution $A$ is $4$. Find the $pH$ of solution $B$ having $[H^+]$ concentration three times that of solution $A$.

At $45 \, ^oC$,the $pK_w$ of a neutral solution is $13.36$. The $pH$ of the solution will be .....

At a certain temperature,if $pK_w = 12.60$,then which of the following is correct for an acidic solution?

What is the normal pH of human blood?

The number of $OH^{-}$ ions in $1 \ mL$ of solution having $pH = 4$ is :-

At $298 \, K$,the equivalent conductivity of a $0.01 \, M$ solution of aniline hydrochloride is $122.5 \, \Omega^{-1} \, cm^2 \, eq^{-1}$,but in the presence of a sufficient excess of aniline to prevent hydrolysis,it is $106.5 \, \Omega^{-1} \, cm^2 \, eq^{-1}$. The equivalent conductivity of $HCl$ at infinite dilution is $426.0 \, \Omega^{-1} \, cm^2 \, eq^{-1}$. The hydrolysis constant of aniline is: