H_(2)O_(2) tums blackened lead paintings to white colour, In this reaction it oxidises Pbs to PbSO_(4). The number of moles of H_(2)O_(2) needed to oxidise one mole of PbS is

H_(2)O_(2) tums blackened lead paintings to white colour, In this reac

1.	H_(2)O_(2) tums blackened lead paintings to white colour, In this reaction it oxidises Pbs to PbSO_(4). The number of moles of H_(2)O_(2) needed to oxidise one mole of PbS is
Answer» 1 2 `0.5` 4 Solution :`PBS+4H_(2)O_(2) to PbS_(4)+4H_(2)O`