H2O2 turns blackened lead paintings to white colour.  In this reaction it oxidizes Pbs to  PbSO4. The number of moles of H2O2 needed to oxidize 0.1 moles of PbS is

H2O2 turns blackened lead paintings to white colour.  In this reaction it oxidizes Pbs to  PbSO4. The number of moles of H2O2 needed to oxidize 0.1 moles of PbS is

  1. A

    1 mole

  2. B

    0.1 mole

  3. C

    0.5 mole

  4. D

    0.4 mole

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    Solution:

    PbS+4H2O2 PbSO4+4H2O

    1---------4

    0.1-------? 

    = 0.4 moles.

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