JEE Main & Advanced Chemistry Some Basic Concepts of Chemistry Question Bank Atomic Molecular and Equivalent masses

  • question_answer The number of gram atoms of oxygen present in 0.3 gram mole of \[{{(COOH)}_{2}}.2{{H}_{2}}O\]is

    A)                 0.6         

    B)                 1.8

    C)                 1.2         

    D)                 3.6

    Correct Answer: B

    Solution :

               \[\because \]   1mole \[{{(COOH)}_{2}}\ .\ 2{{H}_{2}}O\] has 96gm oxygen                    \[\therefore \]0.3 mole \[{{(COOH)}_{2}}\ .\ 2{{H}_{2}}O\] has \[96\times 0.3=28.8gm\]                                 \[\therefore \]   No. of gram atoms of oxygen \[=\frac{28.8}{16}=1.8\].

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