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Problem: Which element is oxidized and which is reduced in the following reaction? PbS(s) + 4H2O2(aq) → PbSO4(s) + 4H2O(l)Express your answer as chemical symbols separated by a comma.

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FREE Expert Solution

To determine which element is reduced or oxidized, we must identify the changes in their oxidation states. Compare the oxidation number of the element on the reactant side and on the product side.

Remember the mnemonics:

Loss                Gain

Electrons         Electrons

Oxidation         Reduction


Reaction:

PbS(s) + 4 H2O2(aq) → PbSO4(s) + 4 H2O(l)

Recall the rules for the oxidation states of some elements

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Problem Details

Which element is oxidized and which is reduced in the following reaction? 

PbS(s) + 4H2O2(aq) → PbSO4(s) + 4H2O(l)

Express your answer as chemical symbols separated by a comma.

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