Chemistry Practice Test – Solutions and Solubility (Questions with Answers and Explanations)

On which of the following is the solubility of a gaseous substance dependent?

I. Nature of solvent
II. Nature of solute
III. Temperature
IV. Pressure
(JAMB 1992)

A. I, II, III and IV
B. I and II only
C. II only
D. I, III and IV only.

Butter is an example of emulsion in which ______ (JAMB 2017)

A. solid is dispersed in a liquid medium
B. gas is dispersed in a solid medium
C. liquid is dispersed in a solid medium
D. liquid is dispersed in a gas medium

Pottasium trioxochlorate (V) has a solubility of 1.5 moldm^-3 at 45^oC. On cooling this solution to a temperature of 20^oC, the solubility was found to be 0.5 moldm^-3. What mass of KClO₃ was crystallised out? [K = 39, Cl = 35.5, O = 16] (JAMB 2012)

A. 1.00 g
B. 10.0 g
C. 12.25 g
D. 122.5 g

From the diagram above, find the amount of solute deposited when 200 cm³ of the solution is cooled from 55^oC to 40^oC. (JAMB 2011)

A saturated solution of AgCI was found to have a concentration of 1.30 x 10 moldm^-3. The solubility product of AgCI therefore is _____ (JAMB 1997)

A. 1.30 x 10^-5 mol²dm⁵
B. 1.30 x 10^-7 mol²dm^-6
C. 1.69 x 10^-10 mol²dm^-6
D. 2.60 x 10^-12 mol²dm^-6