Stoichiometry - Jamb Chemistry Past Questions and Answers

Question 51:

• JAMB 1991

How many grams of bromine will be required to completely react with 10 g of propyne?
(C = 12, H = 1, Br = 80)

A. 20 g
B. 40 g
C. 60 g
D. 80 g

Question 52:

• JAMB 1992

How many moles of (H+) are there in 1 dm³ of 0.5 M solution of H₂SO₄?

A. 2.0 moles
B. 1.0 moles
C. 0.5 mole
D. 0.25 mole

Question 53:

• JAMB 1993

How many moles of oxygen molecules would be produced from the decomposition of 2.50 moles of potassium trioxochlorate (V)?

A. 2.50
B. 3.50
C. 3.75
D. 7.50

Question 54:

• JAMB 1993

4.0 g of sodium hydroxide in 250 cm³ of solution contains?

A. 0.40 moles per dm³
B. 0.10 moles per dm³
C. 0.04 moles per dm³
D. 0.02 moles per dm³

Question 55:

• JAMB 1993

Which of the curves above represents the behaviour of 1 mole of an ideal gas?

A. L
B. Ll
C. Lll
D. LV