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JEE Main & Advanced Chemistry Equilibrium / साम्यावस्था Question Bank Mock Test - Chemical Equilibrium

  • question_answer
    To an equilibrium mixture of\[2S{{O}_{2}}(g)+{{O}_{2}}(g)\rightleftarrows 2S{{O}_{2}}(g)\] some helium, an inert gas, is added at constant volume. The addition of helium causes the total pressure to double. Which of the following is true?

    A) The concentration of the three gases is unchanged

    B) The concentration of sulphur trioxide increases

    C) The number of moles of sulphur trioxide increases

    D) The concentration of sulphur dioxide increases

    Correct Answer: A

    Solution :

    [a] As volume remains constant, the concentration of the three gases will remain unchanged on adding helium.


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