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J & K CET Engineering J and K - CET Engineering Solved Paper-2011

  • question_answer
    When 6.3 g of sodium bicarbonate are added to 30.0 g of acetic acid solution, the residual solution is found to weigh 33.0 g. The mass of carbon dioxide released in the reaction is

    A)  3.0 g           

    B)  0.91 g

    C)  1.91 g          

    D)  3.3 g

    Correct Answer: D

    Solution :

    \[C{{H}_{3}}COOH+NaHC{{O}_{3}}\xrightarrow{{}}C{{H}_{3}}COONa\] \[+\,{{H}_{2}}O+C{{O}_{2}}\] \[\because \]Amount of reactants \[=6.3+30.0=36.3\text{ }g\] \[\because \]Amount of residual solution \[=33.0\text{ }g\] \[\therefore \]Mass of carbon dioxide released \[=36.3-33.0\] \[=3.3g\]


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