Chemistry Practice Problems Redox Reactions Practice Problems Solution: Which element is oxidized and which is reduced in ...

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Solution: Which element is oxidized and which is reduced in the following reactions? Express your answers as chemical symbols separated by a comma. Enter the oxidized element first.a. N2(g) + 3H2(g) → 2NH3(g)b. Cl2(aq) + 2NaI(aq) → I2(aq) + 2NaCl(aq)c. PbS(s) + 4H2O2(aq) → PbSO4(s) + 4H2O(l)

Problem

Which element is oxidized and which is reduced in the following reactions? Express your answers as chemical symbols separated by a comma. Enter the oxidized element first.

a. N2(g) + 3H2(g) → 2NH3(g)

b. Cl2(aq) + 2NaI(aq) → I2(aq) + 2NaCl(aq)

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