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JEE Main & Advanced Chemistry Equilibrium / साम्यावस्था Question Bank Self Evaluation Test - Equilibrium

  • question_answer
    3.2 moles of hydrogen iodide were heated in a sealed bulb at \[444{}^\circ C\] till the equilibrium state was reached. Its degree of dissociation at this temperature was found to be 22% The number of moles of hydrogen iodide present at equilibrium are

    A) 2.496               

    B) 1.87   

    C) 2                                 

    D) 4

    Correct Answer: A

    Solution :

    [a] \[2HI\rightleftharpoons {{H}_{2}}+{{I}_{2}}\]. is 22% decomposed, \[\therefore \frac{3.20\times 22}{100}=0.704\] \[\left( 3.2-0.704 \right)\] is equal to HI present at equilibrium which is = 2.496


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