Chemistry 2022 WAEC Past Questions

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What is the partial pressure of oxygen at s.t.p. in a gaseous mixture containing 100 cm3 of oxygen and 900 cm3 of nitrogen gas?

Graphite is used as a dry lubricant due to the presence of

Which of the following gases is alkaline?

Which of the following statements about an equilibrium system is correct?

A. Forward and backward reactions occur at the same rate
B. The concentrations of reactants must equal that of the products
C. The concentrations of, reactants and products can be changed by adding a catalyst,
D. The concentrations of reactants and products are not affected by a change in temperature

Consider the following reaction equation
N\(_{2}\)(g) + 3H\(_{2(g)}\) ⇌ 2NH3(g) ∆H = -92kJ

Increasing the temperature of the reaction would