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JEE Main & Advanced JEE Main Paper (Held On 11 April 2014)

  • question_answer
    Assuming that the degree of hydrolysis is small, the pH of 0.1 M solution of sodium acetate \[({{K}_{a}}=1.0\times {{10}^{-5}})\] will be:   [JEE Main Online Paper ( Held On 11 Apirl  2014 )

    A) 5.0                                         

    B) 6.0

    C) 8.0                                         

    D) 9.0

    Correct Answer: D

    Solution :

                    Sodium acetate is a salt of strong base and weak acid. \[\therefore \]\[-\frac{dS{{O}_{2}}}{dt}=-2\times \frac{d{{O}_{2}}}{dt}\] \[=-2\times 2.5\times {{10}^{-4}}\] \[=-5\times {{10}^{-4}}\,mol\,{{L}^{-1}}{{s}^{-1}}\]


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