1997 JAMB UTME Chemistry Past Questions

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1997

When platinum electrodes are used during the electrolysis of copper (ll) tetraoxosulphate (lV) solution, the solution gets progressively?

1997

Given that 15.00 cm3 of H2SO4 was required to completely neutralize 25.00 cm3 of 0.125 mol dm-3 NaOH, calculate the molar concentration of the acid solution:

1997

mE + nF → pG + qH. In the equation above, the equilibrium constant is given by?

1997

Oxidation of concentrated hydrochloric acid with manganese (IV) oxide liberates a gas used in the?

1997

One method of driving the position of equilibrium of an endothermic reaction forward is to?

1997

If the rate law obtained for a given reaction is rate = k(X)n (Y)m, what is the overall order of the reaction?

1997

2SO2(g) + O2(g) 2SO3. In the reaction above, the standard heats of formation of SO2(g) and SO3(g) are -297 KJ mol-1 respectively. The heat change of the reaction is?

1997

Which of the additives could improve the quality of steel?

1997

The removal of rust from iron by treatment with tetraoxosulphate (IV) acid is based on the?

1997

2X(aq) + MnO2(s) + 4H+(aq) → X2(g) + Mn2+(aq) + 2H2O.The reaction above can be used for the laboratory preparation of all halogens except fluorine because it is?

1997

Coal gas is made up of carbon (II) oxide, hydrogen and?

1997

A compound that will NOT produce oxygen on heating is?

1997

The final product of the reaction of ethyne with hydrogen iodine is?

1997

The reaction of an alkanol with an alkanoic acid in the presence of concentrated H2SO4 will produce an?

1997

An undesirable paraffin in the petroleum industry which is particularly prone to knocking is?

1997

A sample of a substance containing only C and H burns in excess O2 to yield 4.4g of CO2And 2.7 g of H2O. The empirical formula of a substance is?(C = 12, O = 16, H = 1)

1997

Sodium hydroxide is prepared commercially from sodium chloride solution by?

1997

(1 /(2) N2(g) + (1) / (2)O2(g) → NO(g) ∆H° 89 KJ mol-. If the entropy change for the reaction above at 25°C is 11.8 J mol-, calculate the change in free energy. ∆G°, for the reaction at 25°C?

1997

25 cm3 of 0.02 M KOH neutralized 0.03 g of a monobasic organic acid having the general formula CnH2n + 1 COOH. The molecular formula of the acid is?(C = 12, H = 1, O = 16)

1997

The synthetic detergents are preferred to soap for laundry using hard water because?

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