Question

Which of the following does not exist as a solid?

• A. $NaHC{O}_3$
• B. $Ca(HC{O}_3{)}_2$
• C. $N{a}_{2}C{O}_3$
• D. $CaC{O}_3$

Answer 1

Answer: (B)

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

${NaHCO}_3$ exists as a white crystalline powder.

$Ca\left({HCO}_3\right)$ cannot exist as a solid. It exists only in aqueous form containing ${Ca}^{2+}$ and ${\left({HCO}_3\right)}^{-}$ .

${Na}_2{CO}_3$ can exist as a solid.

${CaCO}_3$ can exist as a solid.

Hence, out of the given options only $Ca{\left({HCO}_3\right)}_2$ cannot exist as a solid.