A colorless solid (X) on heating evolved CO2 and also gave a white residue, soluble in water. Residue also gave CO2 when treated with dilute acid (X) is
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a
Na2CO3
b
CaCO3
c
NaHCO3
d
CaHCO32
answer is C.
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Detailed Solution
2NaHCO3→ΔNa2CO3+H2O+CO2Na2CO3 is soluble in water, give CO2 when treated with dilute acid