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PART A Choose the item that correctly describes the oxidizing agent and the redu

ID: 1006149 • Letter: P

Question

PART A Choose the item that correctly describes the oxidizing agent and the reducing agent in the reaction shown. Fe2O3(s) + 3CO(g) 2Fe(s) + 3CO2(g) C changes from oxidation number +2 to +4. The CO is the oxidizing agent. Fe changes from oxidation number +3 to 0. The Fe2O3 is the reducing agent. C changes from oxidation number +2 to +4. The CO is the reducing agent. Fe changes from oxidation number +2 to 0. The Fe2O3 is the oxidizing agent. C changes from oxidation number -2 to -4. The CO is the reducing agent. Fe changes from oxidation number +3 to 0. The Fe2O3 is the oxidizing agent. C changes from oxidation number +2 to +4. The CO is the reducing agent. Fe changes from oxidation number +3 to 0. The Fe2O3 is the oxidizing agent.

PART B

Choose the item that correctly describes the oxidizing agent and the reducing agent in the reaction shown. BaS(s) + 4H2O2(aq) BaSO4(s) + 4H2O() S changes from oxidation number -2 to +6. The BaS is the reducing agent. O changes from oxidation number -1 to -2. The H2O is the oxidizing agent. S changes from oxidation number +2 to +4. The BaS is the reducing agent. O changes from oxidation number -1 to -2. The H2O2 is the oxidizing agent. S changes from oxidation number -2 to +6. The BaS is the reducing agent. O changes from oxidation number -1 to -2. The H2O2 is the oxidizing agent. S changes from oxidation number -2 to +6. The BaS is the reducing agent. O changes from oxidation number -4 to -2. The H2O2 is the oxidizing agent.

Explanation / Answer

Fe is being reduced from +3 to 0, so CO is the reducing agent
C is being oxidized from +2 to +4, so Fe2O3 is the oxidizing agent

b) is being oxidized from -2 to +6, so H2O2 is the oxidizing agent
O is being reduced from -1 to -2, so BaS is the reducing agent