How many of the following quantities show increase in their value of increasing temperature?
a. Extent of physisorption of gases on solids.
b. Electrical conductivity of an electrolyte solution.
c. Electrical conductivity of an electrolyte solution.
d. Ionic product of water.
e. Vapour pressure of a pure and liquid.
f. Vapour pressure of an ideal solution which follows Rault's law, (keeping composition same)
g. Solubility of gases in liquids.
h. Reducing power of carbon monoxide for extraction of metals
Correct answer:

Options

A. `5`
B. `4`
C. `6`
D. `3`

Answer

B

Explanation

Conductivity of electrolye increases at higher temperature due to higher degree of dissociation and greater mobility of ions. Reducing power of `CO` decreases with increasing temperature as its oxidation becomes less spontaneous.