A) Castner-Kellner
B) Solvay process
C) oxidation
D) transmission process
Correct Answer: B
Solution :
Sodium carbonate is industrially manufactured by Solvay process. In this method, \[\text{NaCl, N}{{\text{H}}_{\text{3}}}\]and limestone are raw materials and reactions involved in this process may be written as \[2N{{H}_{3}}+{{H}_{2}}O+C{{O}_{2}}\xrightarrow{{}}{{(N{{H}_{4}})}_{2}}C{{O}_{3}}\] \[{{(N{{H}_{4}})}_{2}}{{O}_{3}}+{{H}_{2}}O+C{{O}_{2}}\xrightarrow{{}}2\,N{{H}_{4}}HC{{O}_{3}}\] \[N{{H}_{4}}HC{{O}_{3}}+NaCl\xrightarrow{{}}N{{H}_{4}}Cl+NaHC{{O}_{3}}\]\[2NaHC{{O}_{3}}\xrightarrow{{}}N{{a}_{2}}C{{O}_{3}}+C{{O}_{2}}+{{H}_{2}}O\]
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