Solubility - Jamb Chemistry Past Questions and Answers

Question 51:

• JAMB 1999

The solubility product of Cu(IO₃)₂ is 1.08 * 10^-7. Assuming that neither ions react appreciable with water to form H⁺ and OH^-, what is the solubility of this salt?

A. 2.7 * 10^-8 mol dm^-3
B. 9.0 * 10^-8 mol dm^-3
C. 3.0 * 10^-3 mol dm^-3
D. 9.0 * 10^-3 mol dm^-3

Question 52:

• JAMB 1999

2SO_2(g) + O_2(g) ↔ 2SO_3(g). In the chemical reaction above, the substance that will increase the rate of production of sulphur (VI) oxide is

A. Manganese (IV) oxide
B. Finely divided iron
C. Vanadium (V) oxide
D. Nickel

Question 53:

• JAMB 1999

The gas that will form a white precipitate with acidified silver trioxonitrate (v) is

A. NH₃
B. SO₂
C. CO₂
D. HCL

Question 54:

• JAMB 2000

1.0 dm3 of distilled water was used to wash 2.0g of a precipitate of AgCl. If the solubility product of AgCl is 2.0 * 10-10mol2dm-6, what quantity of silver was lost in the process?

A. 2.029 * 10^-3mol dm^-3
B. 1.414 * 10^-3mol dm^-3
C. 2.029 * 10^-5mol dm^-3
D. 1.414 * 10^-5mol dm^-3

Question 55:

• JAMB 2000

Powdered marble reacts faster with hydrochloric acid solution than the granular form because the powdered form has

A. More molecules
B. More atoms
C. Larger surface area
D. Relatively large mass