Chemistry
JAMB 1979
When carbondioxide is bubbled into limewater a white precipitate is formed. If the passage of the gas is continued, the precipitate disappears. The reason for this is
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A.
calcium carbonate is formed which on reaction dissolves
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B.
calcium hydrogen carbonate is precipitated and then dissolves
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C.
calcium carbonate is formed which on reaction with further carbondioxide forms solube calcium hydrogen carbonate
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D.
concentration of the solution has occurred with the deposition of calcium hydroxide
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E.
the solution has become saturated and solid carbondioxide has been deposited
Correct Answer: Option C
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