Question

The element oxidized in the reaction described in PbO2 + 4HCl → 2H2O + PbCl2 + Cl2 is
A. Pb.
B. O.
C. H.
D. Cl.

would the answer be A? please explain

Answers

DrBob222
Oxidation is the loss of electrons. Which is losing electrons.
A. Pb is +4 on the left and +2 on the right. That's a gain of electrons so A can't be right.
B. O doesn't change oxidations state. B can't right.
C. H doesn't change oxidation state so C can't be right.
D. Cl changes from -1 on the left to zero on the right which is a loss of electrons. D must be the correct answer.

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