Answer:
\[C{{O}_{2}}\]is
obtained by heating calcium carbonate. Quicklime thus obtained is dissolved in
water to form slaked lime. Slaked lime is used to form ammonia.
\[CaC{{O}_{3}}\xrightarrow{Heat}Cao+C{{O}_{2}}\]
\[CaO+{{H}_{2}}O\to Ca{{(OH)}_{2}}\]
\[2N{{H}_{2}}Cl+Ca{{(OH)}_{2}}\to 2N{{H}_{3}}+CaC{{l}_{2}}+2{{H}_{2}}O\]\[C{{O}_{2}}\]is
circulated through brine solution which has already been saturated with
ammonia. \[NaHC{{O}_{3}}\] being
sparingly soluble gets precipitated\[NaCl+N{{H}_{3}}+C{{O}_{2}}+{{H}_{2}}O\to
NaHCO+N{{H}_{4}}Cl\]Sodium bicarbonate on heating gives sodium carbonate.
\[2NaHC{{O}_{3}}\xrightarrow{Heat}N{{a}_{2}}C{{O}_{3}}+{{H}_{2}}O+C{{O}_{2}}\]
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