H_2O_2 restores the color of old lead paintin | vedclass

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(B) Old lead paintings often contain lead pigments that react with atmospheric $H_2S$ to form black lead sulfide $(PbS)$.$H_2O_2$ acts as an oxidizing

Vedclass · Accepted Answer

By oxidising $PbS$ to $PbSO_4$

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(B) Old lead paintings often contain lead pigments that react with atmospheric $H_2S$ to form black lead sulfide $(PbS)$.$H_2O_2$ acts as an oxidizing agent and converts the black $PbS$ into white lead sulfate $(PbSO_4)$.The chemical reaction is: $PbS(s) + 4H_2O_2(aq) \rightarrow PbSO_4(s) + 4H_2O(l)$.

$H_2O_2$ restores the color of old lead paintings,blackened by the action of $H_2S$ gas by:

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