A 50 mL solution of pH = 1 is mixed with a 50 mL solution of pH = 2. The pH of the mixture will be nearly

The pH of a solution obtained by mixing 50 mL of 0.4N HCI and 50 mL of 0.2N NaOH is

By adding 20mL of 0.1 N HCI to 20 mL of 0.001N KOH, the pH of the solution obtained will be

The pH of 1.0 M aqueous solution of a weak acid HA is 6.0. Its dissociation constant is

The dissociation constant of $C{H}_{3}COOHCH\_3COOH$ is $1.8\times 10^{-5}1.8\; \backslash times\; 10^\{-5\}$. The hydrolysis constant for 0.1 M sodium acetate is

$P^{H}P^H$ of 2M NaCl will be

Dissociation constant of $N{H}_{4}OHNH\_4OH$ is $1.8\times 10^{-5}\mathrm{.}1.8\; \backslash times\; 10^\{-5\}.$ The hydrolysis constant of $N{H}_{4}ClNH\_4Cl$ would be

If $p{K}_{b}pK\_b$ for fluoride ions at $25^{\circ }C25^\backslash circ\; C$ is 10.83, the ionization constant of HF in water at this temperature is

An aqueous solution of carbonic acid $(H_{2}C{O}_3)(H\_2CO\_3)$ contains

The pH of 0.1 M solution of the following salts increases in the order