For the equilibrium reaction, ${\mathrm{H}}_2\mathrm{O}\left(\mathrm{l}\right)\rightleftharpoons {\mathrm{H}}_2\mathrm{O}\left(\mathrm{g}\right)$. What happens, if pressure is applied:

Directions: Each of these questions contains an Assertion followed by reason. Read them carefully and answer the question on the basis of following options. You have to select the one that best describes the two statements.

Assertion: The ${\mathrm{H}}_3{\mathrm{O}}^{+}$ has additional water molecules closely associated with it.

Reason: In solid state, the species ${\mathrm{H}}_5{\mathrm{O}}_2^{+}$ and ${\mathrm{H}}_9{\mathrm{O}}_4^{+}$ have been found to exist.

Directions: Each of these questions contains an Assertion followed by reason. Read them carefully and answer the question on the basis of following options. You have to select the one that best describes the two statements.

Assertion: The proton transfer reaction between ${\mathrm{NH}}_3$, and ${\mathrm{H}}_2\mathrm{O}$ proceeds only to a slight extent.

Reason; Proton transfer reaction is virtually complete in the case of $\mathrm{HCl}$ in dilute solution.

$\mathrm{Assertion}:$ Aqueous solutions of all strong acids contain only the same acid, the hydronium ion.

$\mathrm{Reason}:$ Hydronium ion is the strongest acid that can exist in any significant concentration in dilute aqueous solution.

Directions: Each of these questions contains an Assertion followed by reason. Read them carefully and answer the question on the basis of following options. You have to select the one that best describes the two statements.

Assertion: Acids that have more than one proton that can be donated to base are called polyprotic acids.

Reason: For all dicrotic acids, the equilibrium constant ${\mathrm{K}}_{\mathrm{a}2}$, for the second stage of ionisation is smaller than the equilibrium constant, ${\mathrm{K}}_{\mathrm{a}1}$ for the first stage of ionisation.

Directions: Each of these questions contains an Assertion followed by reason. Read them carefully and answer the question on the basis of following options. You have to select the one that best describes the two statements.

$\mathrm{Assertion}:$ $0.20\mathrm{M}$ solution of $\mathrm{NaCN}$ is more basic than $0.20\mathrm{M}$ solution of $\mathrm{NaF}$.

$\mathrm{Reason}:$ ${\mathrm{K}}_{\mathrm{a}}$ of $\mathrm{HCN}$ is very much less than that of $\mathrm{HF}$.

Directions: Each of these questions contains an Assertion followed by reason. Read them carefully and answer the question on the basis of following options. You have to select the one that best describes the two statements.

$\mathrm{Assertion}:$ Addition of $\mathrm{HCl}\left(\mathrm{aq}\right)$ to $\mathrm{HCOOH}\left(\mathrm{aq}\right)$, decrease the ionization of $\mathrm{HCOOH}\left(\mathrm{aq}\right)$

$\mathrm{Reason}:$ Due to common ion effect of ${\mathrm{H}}^{+}$, ionization of $\mathrm{HCOOH}$ decreased.