Question

Identify $\left(E\right)$ and $\left(F\right)$ in the following:
$CaC{O}_3\to \underset{\left(g\right)}{\left(A\right)}+\underset{\left(solid\right)}{\left(B\right)}$
$\left(B\right)+H_{2}O\to \left(C\right)\stackrel{\left(A\right)}{\to }\left(D\right)\stackrel{\left(A\right)excess}{\to }\left(E\right)$
$\left(A\right)+N{H}_3\stackrel{\Delta }{\to }\left(F\right)$

• A. $\left(E\right)Ca(HC{O}_3{)}_2;(F)NHCON{H}_3$
• B. $\left(E\right)Ca\left(HC{O}_3\right);\left(F\right)N{H}_{3}CONH$
• C. $\left(E\right)Ca(HC{O}_3{)}_2;(F)N{H}_{2}CON{H}_2$
• D. None of these

Answer 1

Answer: (C)

$\left(E\right)Ca(HC{O}_3{)}_2;(F)N{H}_{2}CON{H}_2$

$CaC{O}_3\to \underset{\left(g\right)}{C{O}_2}+\underset{\left(solid\right)}{CaO}$
$CaO+H_{2}O\to \left(Ca\right(OH{)}_2\left)\stackrel{\left(C{O}_2\right)}{\to }\right(CaC{O}_3\left)\stackrel{\left(C{O}_2\right)excess}{\to }\right(Ca\left(HC{O}_3{)}_2\right)$
$\left(C{O}_2\right)+N{H}_3\stackrel{\Delta }{\to }\left(N{H}_{2}CON{H}_2\right)$
Hence option C is correct.