1988
Which of the following is not a naturally occurring iron ore?
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1988 WAEC SSCE Chemistry Past Questions
1988
Which of the following metals cannot extracted from its ore by using carbon (ll) oxide as the reducing agent?
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1988
Water gas is a mixture of
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1988
How many isomers can be obtained from C4H10?
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1988
The complex salt formed when aluminium dissolves in sodium hydroxide solution is
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1988
When copper (ll) chloride solution is treated with excess aqueous ammonia, a deep blue solution results This is due to the presence of
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1988
Which of the following is a waste product in the Solvary Process for the manufacture of sodium trioxocarbonate (IV)?
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1988
Which of the following correctly explains why iodine crystals change directly into the gaseous state when heated?
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1988
Aqueous sodium trioxocarbonate (IV) solution is alkaline because
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1988
During the electrolysis of dilute tetraoxosulphate (VI) acid solution 0.05 mole of electrons were passed what volume of gas was produced at the anode? (Gaseous molar volume = 22. 4dm3 at s.t.p)
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1988
The reaction represented by the equation C(s) + H2O(l) → CO(s) + H 2(s) was carried out at 27oC if the enthalpy change was + 4500 J and the entropy change was + 12J, what was the free energy change? (∆G = ∆H - T∆S)
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1988
What is the amount (in mole) of hydrogen gas that would be produced if 0.6 mole of hydrochloric acid reacted with excess zinc according to the following equation? Zn(s) + 2HCI(aq) → ZnCI2(aq) + H2(g)
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