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NEET Chemistry Thermodynamics / रासायनिक उष्मागतिकी Question Bank Self Evaluation Test - Thermodynamics

  • question_answer
    Standard Gibb's free energy change for isomerization reaction cis-2-pentene \[\rightleftharpoons \] trans-2-pentene is \[-3.67\text{ }kJ/mol\] at 400 K. If more trans-2-pentene is added to the reaction vessel, then

    A) more cis-2-pentene is formed

    B) equilibrium remains unaffected

    C) additional trans-2-pentene is formed

    D) equilibrium is shifted in forward direction

    Correct Answer: A

    Solution :

    [a] If more trans-2-pentene is added, then its concentration in right hand side will increase. But in order to maintain the K constant, concentration of cis-2-pentene will also increase. Therefore more cis-2- pentene will be formed.


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