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CGP EDU Academic Team
Published on: August 13, 2026
A colourless solid (X) on heating evolved CO 2 and also gave a white residue, soluble in water. Residue also gave CO 2 when treated with dilute acid. (X) is :
Text Solution
Verified by ExpertsThe correct answer is:
C
KHCO 3 
K 2 CO 3 (soluble in water) + CO 2 + H 2 O.
K 2 CO 3 + H 2 SO 4 
K 2 SO 4 + CO 2 + H 2 O.
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