Solubility - Jamb Chemistry Past Questions and Answers

Question 71:

• JAMB 2012

The solubilites of different solutes in a given solvent can be compared by

A. Plotting their solubility curves on separete axes
B. Plotting their solubility curves on the same axes
C. Plotting some of the solubility curves on the x-axis and others on the y-axis
D. Plotting their solubility curves on the x-axis only

Question 72:

• JAMB 2012

Potassium trioxochlorate (V)has a solubility of 1.5 mol dm ^-3 at 45 ^oC.On cooling this solution to a temperature of 20 ^oC, the solubility was found to be 0.5 mol dm ^-3. What mass of KCIO ₃ was crystalized out?
[K = 39, Cl = 35.5 O =16]

A. 1.00g
B. 10.00g
C. 12.25g
D. 122.50g

Question 73:

• JAMB 2012

A major factor considered in selecting a suitable method for preparing a simple salt is its

A. Crystalline from
B. Melting point
C. Reactivity with dilute acids
D. Solubility in water

Question 74:

• JAMB 2013

If 24.4 g of lead (ll) trioxonitrate (V) were dissolved in 42 g of distilled water at 20^oC; calculate the solubility of the solute in gdm^-3.

A. 581.000.
B. 0.581
C. 5.810
D. 58.100

Question 75:

• JAMB 2014

The dispersion of a liquid in a liquid medium will give

A. An emulsion
B. A fog
C. A gel
D. An aerosol