Chemistry
JAMB 1979
When ammonium, potassium and calcium carbonates are each separately heated
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A.
none of them will decompose
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B.
each of them will decompose to give carbondioxide and the respective oxide
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C.
ammonium carbonate and potassium carbonate will not decompose
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D.
only ammonium carbonate and the respective oxide
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E.
ammonium carbonate will decompose to give carbondioxide, water and ammonia
Correct Answer: Option E
Explanation
Solid ammonium carbonate decomposes as it is heated.
(NH4)2CO3 → 2 NH3 + CO2 + H2O
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