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X is a substance which liberates CO\(_2\) on treatment with concentrated H\(_2\)SO\(_4\). A warm solution...

Chemistry
JAMB 2019

X is a substance which liberates CO\(_2\) on treatment with concentrated H\(_2\)SO\(_4\). A warm solution of X can decolorize acidified KMnO\(_4\). X is

  • A. HCOOH
  • B. NaHCO\(_3\)
  • C. FeCO\(_3\)
  • D. H\(_2\)C\(_2\)O\(_4\)
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Correct Answer: Option D
Explanation

It should be noted that for X to liberate CO\(_2\), X must be a carbonate or an oxalate. Since X decolorizes KMnO\(_4\), X must be an oxalate. 

Therefore, X is H\(_2\)C\(_2\)O\(_4\).

There is an explanation video available below.

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Explanation Video

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