Solution of equal of pH and pOH is called

In 0.02 M solution of perchlorid acid (HClO_(4)) at 298 K the sum of pH and pOH is equal to

The relation between pH and pOH is

Equal volumes of two solutions of a strong acid having pH 3 and pH 4 are mixed together. The pH of the resulting solution will then be equal to

In a solution pH and pOH at 298 K is equal. to: zero, 14 , infinity, a negative number

At a certain temperature, what is the value for the sum of pH annd pOH for an aqueous solution? What will be its value at 25^(@)C ?

In 10mL aq solution of NaOH of "pOH=1,40ml aq HCl solution (pH=2) and 550ml H_(2)O is added at 25^(@)C .Decrease in pH of NaOH solution

Equal volumes of two solutions of pH 4 and pH 11 are mixed. The pH of the resulting solution will be :