The $pH$ of a completely dissociated $0.005 \ M \ H_2SO_4$ solution is:

Calculate the $pH$ of a $0.002 \ M$ $KOH$ solution.

Millimoles of calcium hydroxide required to produce $100 \ mL$ of the aqueous solution of $pH$ $12$ is $x \times 10^{-1}$. The value of $x$ is $..............$. (Nearest integer). Assume complete dissociation.

When equal volumes of solutions with $pH = 6$ and $pH = 3$ are mixed,what is the $pH$ of the resulting solution?

Which of the following solutions will have $pH$ close to $1.0$?

Following four solutions are prepared by mixing different volumes of $NaOH$ and $HCl$ of different concentrations. The $pH$ of which one of them will be equal to $1$?