2014 WAEC SSCE Chemistry Past Questions

2014

The mass of 800cm3 of gas Q at s.t.p. is 1.0g. What is the molar mass of Q? [Avogadros constant = 22.4dm3 mol-1`]

2014

If 0.20 mol dm-3 NaOH(aq) was evaporated to yield 5.0g of solid NaOH, calculate the volume of NaOH (aq) used. (Na = 23.0,O = 16:0; H = 1.00)

2014

The oxidation number of sulphur in Fe2(SO4)3 is

2014

A gaseous mixture contains 0,256 g of hydrogen and 2.00 g of oxygen. The mole ration of hydrogen to oxygen in the mixture is (H=1.00; O=16,0)

2014

An aqueous solution of Na2CO3 is

2014

The type of energy changes that accompany the mixing of a strong acid to a strong base is

2014

Which of the following statements about volatile liquids is correct? They have

2014

The vapour pressure of a given volume of liquid increase when the

2014

Which of the following relationships correctly expresses the Boyle's law?

2014

Which of the following statements about a chemical system in equilibrium is correct/ The

2014

Consider the reaction represented by the following equation: Na2CO3(aq) + 2HCl(aq) \(\longrightarrow\) 2NaCl(aq) + H2O(l) + CO2(g) . What volume of 0.02 mol dm-3 Na2CO3(aq) would be required to completely neutralize 40 c…

2014

Which of the following salts on hydrolysis would give an alkaline solution?

2014

The gases produced when Cu(NO3)2(s) was heated are

2014

Which of the following substances with the corresponding pH value is an alkali?Substance pH

2014

Zinc oxide is said to be amphoteric because it

2014

Ethene molecules can be added to one another to form a long chain compound called a

2014

Reduction is the process of

2014

The reaction that occurs all the anode when CuSO4(aq) is electrolyzed using carbon electrode is

2014

Consider the reaction represented by the following equation: N2(g) + 3H2(g) ⇌ 2NH3(g); ∆Hϴ = -xkJ mol-1. Which of the following conditions would increase the yield of NH3?

2014 WAEC SSCE Chemistry Past Questions

The mass of 800cm3 of gas Q at s.t.p. is 1.0g. What is the molar mass of Q? [Avogadros constant = 22.4dm3 mol-1`]

If 0.20 mol dm-3 NaOH(aq) was evaporated to yield 5.0g of solid NaOH, calculate the volume of NaOH (aq) used. (Na = 23.0,O = 16:0; H = 1.00)

The oxidation number of sulphur in Fe2(SO4)3 is

A gaseous mixture contains 0,256 g of hydrogen and 2.00 g of oxygen. The mole ration of hydrogen to oxygen in the mixture is (H=1.00; O=16,0)

An aqueous solution of Na2CO3 is

The type of energy changes that accompany the mixing of a strong acid to a strong base is

Which of the following statements about volatile liquids is correct? They have

The vapour pressure of a given volume of liquid increase when the

Which of the following relationships correctly expresses the Boyle's law?

Which of the following statements about a chemical system in equilibrium is correct/ The

Consider the reaction represented by the following equation: Na2CO3(aq) + 2HCl(aq) \(\longrightarrow\) 2NaCl(aq) + H2O(l) + CO2(g) . What volume of 0.02 mol dm-3 Na2CO3(aq) would be required to completely neutralize 40 c…

Which of the following salts on hydrolysis would give an alkaline solution?

The gases produced when Cu(NO3)2(s) was heated are

Which of the following substances with the corresponding pH value is an alkali?Substance pH

Zinc oxide is said to be amphoteric because it

Ethene molecules can be added to one another to form a long chain compound called a

Reduction is the process of

The reaction that occurs all the anode when CuSO4(aq) is electrolyzed using carbon electrode is

Consider the reaction represented by the following equation: N2(g) + 3H2(g) ⇌ 2NH3(g); ∆Hϴ = -xkJ mol-1. Which of the following conditions would increase the yield of NH3?

Which of the following factors would affect the equilibrium constant?