NEET Sample Paper NEET Sample Test Paper-1

  • question_answer To make a solution of \[pH=12,\]the amount of \[NaOH\] dissolved in one litre of the solution should be

    A)  \[0.1\,g\]                     

    B)  \[0.2\,g\]

    C)  \[0.4\,g\]           

    D)  \[1.2\,g\]

    Correct Answer: C

    Solution :

    \[pH=12\]  means \[[{{H}^{+}}]={{10}^{-12}}\] or         \[[O{{H}^{-}}]={{10}^{-2}}M\] or         \[[NaOH]={{10}^{-2}}M\]                 \[=\frac{M}{100}\]                 \[=\frac{1}{100}\times 40\,g{{L}^{-1}}=0.4\,g{{L}^{-1}}\]            

adversite


You need to login to perform this action.
You will be redirected in 3 sec spinner

Free
Videos