Chhattisgarh PMT Chhattisgarh PMT Solved Paper-2005

  • question_answer
    Ethylene may be obtained by dehydration of which of the following with concentrated \[{{H}_{2}}S{{O}_{4}}\] at\[160-{{170}^{o}}C\]?

    A)  \[{{C}_{2}}{{H}_{5}}OH\]       

    B)  \[C{{H}_{3}}OH\]

    C)  \[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}OH\]

    D)  \[{{(C{{H}_{3}})}_{2}}CHC{{H}_{2}}OH\]

    Correct Answer: A

    Solution :

    Ethylene \[({{C}_{2}}{{H}_{4}})\] is obtained in lab by dehydrating ethyl alcohol in presence of cone. \[{{H}_{2}}S{{O}_{4}}\] at \[160-{{170}^{o}}C\] \[C{{H}_{3}}-C{{H}_{2}}OH\xrightarrow[160-{{170}^{o}}C]{Conc\,\,{{H}_{2}}S{{O}_{4}}}\]\[C{{H}_{2}}=C{{H}_{2}}+{{H}_{2}}O\]


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