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J & K CET Medical J & K - CET Medical 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\[=6.3+30.0=-\text{ }36.3\text{ }g\] \[\because \]Amount of residual solution = 33.0 g \[\therefore \]Mass of carbon dioxide released            \[=36.3-33.0\]             \[=3.3\,g\] 


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