Conjugate base of Hydrazoic acid $(H{N}_3)(HN\_3)$ is

Which of the following can act both as a Bronsted acid and a Bronsted base?

The pH of a solution is 5. Its hydrogen ion concentration is increased 100 times. Its pH will be

An acid solution of pH = 6 is diluted 1000 times, the pH of the final solution becomes

Which of the following solution will have pH close to 1.0?

The pH of the solution produced when an aqueous solution of pH = 5 is mixed with equal volume of an aqueous solution of pH = 3 is

A monoprotic acid (HA) is 1% ionised in its aqueous solution of 0.1 M strength. Its pOH will be

The number of $H^{+}H^+$ ions present in 1 mL of a solution having pH = 13 is

The $p{K}_{a}pK\_a$ of 0.1 M acetic acid solution is 4.78. The pH of the solution will be

1 $c{m}^{3}cm^3$ of 0.01N HCI is added to one litre of sodium chloride solution. The pH of the resulting solution will be