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A colourless solid substance (A) on heat...

A colourless solid substance (A) on heating evolved `CO_2` and also gave a white residue, soluble in water. Residue also gave `CO_2` when treated with dilute HCI.

A

`Na_(2)C)_(3)`

B

`NaHCO_(3)`

C

`CaCO_(3)`

D

`Ca(HCO_(3))_(2)`

Text Solution

Verified by Experts

The correct Answer is:
b
`2NaHCO_(3)tounderset(downarrow)(2HCI)("Soluble in water")Na_(2)CO_(3)+H_(2)O+CO_(2)uparrow`
`NaCI+H_(2)O+CO_(2)uparrow`
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