2002 - JAMB Chemistry Past Questions and Answers - page 1
A compound contains 31.91% potassium, 28.93% chlorine and the rest oxygen. What is the chemical formula of the compound?
[K = 39, Cl = 35.5, O = 16]
The formula CH2 for ethanoic acid is regarded as its
A little quantity of trichloromethane (b.pt 60,oC) was added to a large quantity of ethanol (b.pt 78,oC). The most probable boiling point of the resultant mixture is from
The chromatography separation of ink is based on the ability of the components to
In the reaction E+F ↔ G+H, the backward reaction is favoured if the concentration of
What amount of mercury would be liberated if the same quantity of electricity that liberates 0.65g of zinc is applied?
Which of the following equations show that a reaction is in equilibrium?
PCl5(g) ↔ PCl3(g) + Cl2(g)
In the reaction above, a decrease in pressure will
When H2S is passed into a solution of iron (III) chloride, the solution turns
The Arrhenius equation expresses the relationship between the speed of a reaction and its