MnO2 + 4HCl → 2 + 2H2O + Cl2
Identify the substance oxidized in the above equation.
(a) MnCl2
(b) HCl
(c) H2O
(d) MnO2
Answer: (d) Reason: In this reaction, HCl is oxidized to Cl2, whereas MnO2 is reduced to MnCl2.
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