Question

Consider the following chemical equation: H202(aq)+ 2FeCl2(aq) + 2HCl(aq) --> 2FeCl3(aq)+ 2H20(l)

Filling in the blanks for each reactant, identify the oxidizing agent (OX), the reducing agent (RE), and any spectator (SP) compound. (A spectator compound is one that does not participate in the redox reaction.) Fill in the blanks with the appropriate abbreviations given. Hint. See Meyer, Chemistry of Hazardous Materials, section 11.3 (4th, 5th, 6th eds.)

• H2O2 (hydrogen peroxide):_________

• FeCl2 (ferrous chloride): ________

• HCl (hydrochloric acid):_____________

Answer 1

First we need to know oxidised, reducing agent and reduced & oxidising agent.

Increase in oxidation state is called oxidised and its called reducing agent.

Decrease in oxidation state is called reduced and its called oxidising agent.

In H2O2 (reactant) , oxidation state of O is -1 while in H2O (Product), oxidation state of O is -2.Therefore we can say tha oxidation state varying from -1 to -2 so it is reduced and its called oxidising agent.

In FeCl2 (reactant), the oxidation state of Fe is +2 While oxidation state of Fe us +3 in FeCl3 (product).Therefore we can say that oxidation state is increasing from +2 to +3 hence it is oxidised and its called reducing agent.

HCl is spectator because it is not participating in the redox reaction.