A compound A on heating gives a colourless gas and a residue that is dissolved in water to obtained 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 is

A compound A on heating gives a colourless gas and a residue that is d

1.	A compound A on heating gives a colourless gas and a residue that is dissolved in water to obtained 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 is
Answer» <html><body><p>`CaCO_(<a href="https://interviewquestions.tuteehub.com/tag/3-301577" style="font-weight:bold;" target="_blank" title="Click to know more about 3">3</a>)`<br/>`Na_(2)CO_(3)`<br/>`K_(2)CO_(3)`<br/>`CaSO_(4) . 2 H_(2)O`</p>Solution :`underset((A))(CaC)O_(3)(s) overset(Delta)(to) CO_(2) (g) + CaO(s)` <br/> `CaO (s) + H_(2)O (l) to underset((<a href="https://interviewquestions.tuteehub.com/tag/b-387190" style="font-weight:bold;" target="_blank" title="Click to know more about B">B</a>))(Ca(<a href="https://interviewquestions.tuteehub.com/tag/oh-585115" style="font-weight:bold;" target="_blank" title="Click to know more about OH">OH</a>)_(2)) (aq)` <br/> `underset((B)) (Ca(OH)_(2)) (aq) + underset(("excess"))(2 CO_(2)) (g) to Caunderset((C))((HCO_(3))_(2)) (aq) `<br/> `Caunderset((C))((HCO_(3))_(2)) (aq) overset(Delta)(to) Ca underset((A))(CO_(3)) (s) + CO_(2) (g) + H_(2)O(l)`</body></html>