Complete and balance the following equation:
H2O2(aq)+ClO2(aq)→ClO2−(aq)+O2(g) (basic solution) Express your
answer as a chemical equation. Identify all of the phases in your
answer. H2O2(aq)+2ClO2(aq)+2OH−(aq)→O2(g)+2ClO2−(aq)+2H2O(l) What
is the oxidant and reductant?
Answer
Oxidation is the process which involves the increase in the oxidation number. Substance which undergoes oxidation is known as the reducing agent. Reduction is the process which involves the decrease in the oxidation number. Substance which undergoes reduction is known as the oxidizing agent. Substance being oxidized ----H_2O_2 Reducing agent (re duct ant) ----H_2O_2 Substance being reduced ---ClO_2 Oxidizing agent (oxidant) ----ClO_2 Step: 1 Oxidation half reaction H_2O_2 rightarrow O_2 Reduction half reaction: ClO_2 rightarow ClO_2 Step: 2 Balancing oxidation half reaction: H_2O_2 rightarrow O_2 Balancing H: H_2O_2 rightarrow O_2 + 2H^+ H_2O_2 + 20H^-righarrow O2 + 2H^+ + 2OH^- H_2O_2 + 2OH^-rightarrow O_2 + 2H_2O Balancing charge: H_2O_2 + 2OH^-rightarrow O_2 + 2H_2O + 2eY^- Step: 3 balancing reduction half reaction: ClO_2rightarrow ClO_2 Balancing charge: ClO_2 + le^-rightarrow C1O^-_2 Step 4: Equalizing the no of electron lostin oxidation half reaction and no of electrons gainedin