Acids, bases and salts - Jamb Chemistry Past Questions and Answers

Question 46:

• JAMB 1988

Which of the following dilute solutions has the lowest pH value?

A. Calcium trioxocarbonate (IV)
B. Sodium trioxocarbonate (IV)
C. Hydrochloric acid
D. Ethanoic acid

Question 47:

• JAMB 1988

Which of the following in aqueous solution is neutral to litmus?

A. NH₄CI
B. NaCO₃
C. FeCl₃
D. NaCl

Question 48:

• JAMB 1988

What volume of a 0.1 M H₃PO₄ will be required to neutralize 45.0 cm³ of a 0.2 M NaOH?

A. 10.0 cm³
B. 20.0 cm³
C. 27.0 cm³
D. 30.0 cm³

Question 49:

• JAMB 1988

Which of the following substances is a basic salt?

A. Na₂CO₃
B. Mg(OH)CI
C. NaHCO₃
D. K_{[/sub]SO[sub]4}.AI₂(SO₄)₃,24H₂O

Question 50:

• JAMB 1988

Which of the followingstatements is TRUE?

A. The dissolution of NaOH_(s) in water is endothermic
B. The heat os solution of NaOH_(s) is positive
C. The NaOH_(s) gains heat from the surroundings
D. The heat of solution of NaOH_(s) is negative