1. Tardigrade
  2. Question
  3. Chemistry
  4. The compound A on heating gives a colourless gas and a residue that is dissolved in water to obtain B. Excess of CO2 is bubbled through aqueous solution of B, C is formed which is recovered in the solid form. Solid C on gentle heating gives back A. The compound A is -

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Q. The compound A 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 which is recovered in the solid form. Solid C on gentle heating gives back A. The compound A is -

AIPMTAIPMT 2010The s-Block Elements

Solution:

Given,
Thus, the compound $'A'$ must be $CaCO_3$ and the reactions are as follows

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