The compound (X) on heating gives a colourless gas and a residue that is dissolved in water to obtain (B). Excess of CO_(2) is bubbled through aqueous solution of B, C is formed. Solid (C) or heating gives back X. (B) is …......

The compound (X) on heating gives a colourless gas and a residue that

1.	The compound (X) on heating gives a colourless gas and a residue that is dissolved in water to obtain (B). Excess of CO_(2) is bubbled through aqueous solution of B, C is formed. Solid (C) or heating gives back X. (B) is …......
Answer» `CaCO_(3)` `Ca(OH)_(2)` `Na_(2)CO_(3)` `NaHCO_(3)` SOLUTION :`CaCO_(3)OVERSET(Delta)toCaO+CO_2` `CaO+H_2OtoCa(OH)_2 , Ca(OH)_2+CO_2to CaCO_3+H_2O`