J & K CET Medical J & K - CET Medical Solved Paper-2014

  • question_answer
    Sodium carbonate is manufactured by

    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,\[NaCl,N{{H}_{3}}\]and limestone are raw materials and reactions involved in this process may be written as \[2N{{H}_{3}}+{{H}_{2}}O+C{{O}_{2}}\xrightarrow[{}]{{}}{{(N{{H}_{4}})}_{2}}C{{O}_{3}}\] \[{{(N{{H}_{4}})}_{2}}{{O}_{3}}+{{H}_{2}}O+C{{O}_{2}}\xrightarrow[{}]{{}}2N{{H}_{4}}HC{{O}_{3}}\] \[N{{H}_{4}}HC{{O}_{3}}+NaCl\xrightarrow[{}]{{}}N{{H}_{4}}Cl+NaHC{{O}_{3}}\] \[2NaHC{{O}_{3}}\xrightarrow[{}]{{}}N{{a}_{2}}C{{O}_{3}}+C{{O}_{2}}+{{H}_{2}}O\]


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