Question

Match the column I with column II and mark the appropriate choice.

	Column I		Column II
(A)	Liquid Vapour	(i)	Saturated solution
(B)	Solid Liquid	(ii)	Boiling point
(C)	Solid Vapour	(iii)	Sublimation point
(D)	Solute (s) Solute (solution)	(iv)	Melting point

• A. (A)$H_{2}S$ (i), (B) $CH_{3}COO^{-}$ (iii), (C) $H_{3}O^{+}$ (ii), (D) $SO_{4}^{2 -}$ (iv)
• B. (A) $BF_{3}$ (ii),(B) $AlCl_{3}$ (iv), (C) $FeCl_{3}$ (iii), (D) $PH_{3}$ (i)
• C. (A) $SO_{4}^{2 -}$ (iv), (B) $HSO_{4}^{-}$ (ii), (C) $H^{+}$ (i), (D) $H_{2}SO_{4}$ (iii)
• D. (A) $SO_{4}^{2 -}$ (iii), (B) $HCO_{3}^{-}$ (iv), (C) (ii), (D) $CO_{3}^{2 -}$ (i)

Answer 1

Answer: (B)

(A) $BF_{3}$ (ii),(B) $AlCl_{3}$ (iv), (C) $FeCl_{3}$ (iii), (D) $PH_{3}$ (i)

Answer 2

: (1) Liquid Vapour equilibrium exists at the boiling point.

(2) Solid Liquid equilibrium exists at the melting point.

(3) Solid Vapour equilibrium exists at the sublimation point.

(4) Solute (s) Solute (solution) equilibrium exists in a saturated solution.