Maximum lowering of vapour pressure is observed in the case of

Question

Maximum lowering of vapour pressure is observed in the case of (A) 0.1 M glucose (B)  0.1 M BaCl2 (C) 0.1 M MgSO4 (D) 0.1 NaCl

Tardigrade Admin · Accepted Answer

Lowering of vapour pressure is a colligative property ie, depends only upon the
number of particles of solute and not on the nature of solute.

∵ 0.1 M

glucose

\to

remains undissociated

0.1 M B a C l_{2} \to B a^{2 +} + 2 C l^{-} \Rightarrow 3

ions

0.1 M M g S O_{4} \to M g^{2 +} + S O_{4}^{2 -} \Rightarrow 2

ions

0.1 M B a C l_{2}

gives maximum number of particles, hence it exhibits maximum lowering of vapour
pressure.

Q. Maximum lowering of vapour pressure is observed in the case of