6-8 use the unbalanced redox reaction fe(s) + mno. (aq) → fe low to answer questions 6-8 fe + mn(aq) (acid media) + mn2(aq) (acid 6. the oxidation state of manganese changes from a. 4 to 2 b. 7 to 2 c. o to 3 d. 7 to 0 e. 7 to 5 7. the oxidizing agent is agent is a. fe(s) b. mno4 (aq) c. fet d. mn* (aq) 8. when the equation is balanced the coefficient in front of water is a 2 b. 6 c. 7 d. 12 9. which of the following changes would not increase the production of products the reaction? note the reaction is exothermic. a. lower the ph b. make the iron electrode bigger c. add more kmno. d. cool the reaction