CHEMISTRY
JAMB 2023 - Question 8
Chemistry 2023 JAMB Past Questions - Question 8: X is a solid substance which evolves carbon (IV) oxide on treatment with conc H2S04- A warm solute of X also decolorizes acidified KMnO4- The solid substance X is
A:
B:
C:
D:
Correct Answer
D
Explanation
It should be noted that for X to liberate CO22, X must be a carbonate or an oxalate. Since X decolorizes KMnO44, X must be an oxalate. Therefore, X is H22C22O44.
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