Question

$CaC{O}_3$ does not dissolve in water, but in the presence of $C{O}_2$ it dissolves to form ${}^{\prime }{X}^{\prime }$

${}^{\prime }{X}^{\prime }$ is

• A. $CaC{O}_3,H_{2}O$
• B. $Ca(HC{O}_3{)}_2$
• C. $CaH(C{O}_3{)}_2,$
• D. None of these

Answer 1

The correct option is B

$Ca(HC{O}_3{)}_2$

$CaC{O}_3+H_{2}O+C{O}_2\to Ca\left(HC{O}_3\right)$

When carbon dioxide is bubbled through a calcium carbonate in water mixture calcium bicarbonate is obtained.