JEE Main & Advanced Chemistry Hydrogen & Its Compounds Question Bank Hydrogen peroxide

  • question_answer The volume of oxygen liberated from \[0.68gm\] of \[{{H}_{2}}{{O}_{2}}\] is [Pb. PMT 2004]

    A) \[112\,ml\]

    B) \[224\,ml\]

    C) \[56\,ml\]

    D) \[336\,ml\]

    Correct Answer: B

    Solution :

    We know that \[2{{H}_{2}}{{O}_{2}}\xrightarrow{{}}\,2{{H}_{2}}O+{{O}_{2}}\] \[2\times 34g\]         \[22400\,ml\] \[\because \] \[2\times 34\,gm=68\,gm\] of \[{{H}_{2}}{{O}_{2}}\] liberates \[22400\,ml\,\,{{O}_{2}}\] at STP \[\therefore \]  \[.68\,gm\] of\[{{H}_{2}}{{O}_{2}}\] liberates \[=\frac{.68\times 22400}{68}=224\,ml\]

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