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BCECE Medical BCECE Medical Solved Papers-2015

  • question_answer
    The reaction between nitric oxide (NO) and oxygen to form nitrogen dioxide \[(N{{O}_{2}})\] is a key step in photochemical smog formation \[2NO(g)+{{O}_{2}}(g)\xrightarrow{{}}2N{{O}_{2}}(g)\] The grams of \[N{{O}_{2}}\] are formed by complete by reaction of 1.20 g of NO is

    A)  7.2g  

    B)  2:3 g  

    C)  1.8g   

    D)  4.1 g

    Correct Answer: C

    Solution :

    1 mole of NO gives = 1 mol \[N{{O}_{2}}\] Hence, \[1.20\,\,g\,NO=\frac{1.20}{30}\,mol\] gives \[=1\times \frac{1.20}{30}mol\,N{{O}_{2}}=\frac{1.20}{30}\times 46\,g\,N{{O}_{2}}=1.84\,g\,N{{O}_{2}}\]


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