Find A, B and C in the following reactions :

Question:

Find $\mathrm{A}, \mathrm{B}$ and $\mathrm{C}$ in the following reactions :

$\mathrm{NH}_{3}+\mathrm{A}+\mathrm{CO}_{2} \rightarrow\left(\mathrm{NH}_{4}\right)_{2} \mathrm{CO}_{3}$

$\left(\mathrm{NH}_{4}\right)_{2} \mathrm{CO}_{3}+\mathrm{H}_{2} \mathrm{O}+\mathrm{B} \rightarrow \mathrm{NH}_{4} \mathrm{HCO}_{3}$

$\mathrm{NH}_{4} \mathrm{HCO}_{3}+\mathrm{NaCl} \rightarrow \mathrm{NH}_{4} \mathrm{Cl}+\mathrm{C}$

  1. $\mathrm{A}-\mathrm{O}_{2} ; \mathrm{B}-\mathrm{CO}_{2} ; \mathrm{C}-\mathrm{Na}_{2} \mathrm{CO}_{3}$

  2. $\mathrm{A}-\mathrm{H}_{2} \mathrm{O} ; \mathrm{B}-\mathrm{O}_{2} ; \mathrm{C}-\mathrm{Na}_{2} \mathrm{CO}_{3}$

  3. $\mathrm{A}-\mathrm{H}_{2} \mathrm{O} ; \mathrm{B}-\mathrm{O}_{2} ; \mathrm{C}-\mathrm{NaHCO}_{3}$

  4. $\mathrm{A}-\mathrm{H}_{2} \mathrm{O} ; \mathrm{B}-\mathrm{CO}_{2} ; \mathrm{C}-\mathrm{NaHCO}_{3}$


Correct Option: , 4

Solution:

$2 \mathrm{NH}_{3}+\underset{(\mathrm{A})}{\mathrm{H}_{2} \mathrm{O}}+\underset{2}{\mathrm{CO}_{2}} \longrightarrow\left(\mathrm{NH}_{4}\right)_{2} \mathrm{CO}_{3}$

$\left(\mathrm{NH}_{4}\right)_{2} \mathrm{CO}_{3}+\mathrm{H}_{2} \mathrm{O}+\underset{(\mathrm{B})}{\mathrm{CO}_{2}} \longrightarrow 2 \mathrm{NH}_{4} \mathrm{HCO}_{3}$

$\mathrm{NH}_{4} \mathrm{HCO}_{3}+\mathrm{NaCl} \longrightarrow \underset{\text { (C) }}{\mathrm{NaHCO}_{3}}+\mathrm{NH}_{4} \mathrm{Cl}$

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