100 ml of a mixture of NaOH and Na2SO4 is neutralized by 10 ml of 0.5 M H2SO4. Hence NaOH in 100 mL solution is

100 ml of a mixture of NaOH and Na2SO4 is neutralized by 10 ml of 0.5 M H2SO4. Hence NaOH in 100 mL solution is

  1. A

    0.2 g

  2. B

    0.4 g

  3. C

    0.6 g

  4. D

    none of these

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    Solution:

    As  Na2SO4 is already neutral so only NaOH will be neutralized by H2SO4

       Eq. of NaOH = Eq. of H2SO4

                WENaOH  =  NV(ml)1000H2SO4

                W40=0.5×2×101000 W = 40 × 10-2 = 0.4 g

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