Medium MCQ +4 / -1 PYQ · JEE Mains 2023

Compound A reacts with NH$_4$Cl and forms a compound B. Compound B reacts with H$_2$O and excess of CO$_2$ to form compound C which on passing through or reaction with saturated NaCl solution forms sodium hydrogen carbonate. Compound A, B and C, are respectively :

  1. A $\mathrm{Ca{(OH)_2},NH_4^ \oplus ,{(N{H_4})_2}C{O_3}}$
  2. B $\mathrm{CaC{l_2},NH_4^ \oplus ,{(N{H_4})_2}C{O_3}}$
  3. C $\mathrm{CaC{l_2},N{H_3},N{H_4}HC{O_3}}$
  4. D $\mathrm{Ca{(OH)_2},N{H_3},N{H_4}HC{O_3}}$ Correct answer

Solution

$\underset{(B)}{\mathrm{Ca}(\mathrm{OH})_{2}}+\mathrm{NH}_{4} \mathrm{Cl} \longrightarrow \mathrm{CaCl}_{2}+\underset{(B)}{\mathrm{NH}_{3}}+\mathrm{H}_{2} \mathrm{O}$ <br/><br/> $$ \begin{aligned} & \mathrm{NH}_{3}+\mathrm{H}_{2} \mathrm{O}+\underset{\text { Excess }}{\mathrm{CO}_{2}} \longrightarrow \underset{(C)}{\mathrm{NH}_{4} \mathrm{HCO}_{3}} \\\\ & \mathrm{NH}_{4} \mathrm{HCO}_{3}+\mathrm{NaCl} \longrightarrow \mathrm{NH}_{4} \mathrm{Cl}+\mathrm{NaHCO}_{3} \end{aligned} $$

About this question

Subject: Chemistry · Chapter: p-Block Elements · Topic: Group 13: Boron Family

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