3. For each reaction scheme, select the reagent that is used at each given step. Note: Some reactions are from this chapter, but others are from earlier this semester, or from last semester. H3C CH3 H₂C a. b. CH3 CH2 H3C CH3 Reagents 9. HNO3, H2SO4 10. KMnO4, H3O+ 1. Br₂, FeBr3 2. Mg, ether 3. HCHO then H3O+ 4. Cl₂, FeCl3 5. NaCN 6. H3O+ 7. SOCI₂ 15. 8. CH3CI, AICI 3 CH3 11. Fe, H₂O then OH- 12. BH/THF then H₂O₂, OH 13. PBг3 14. LiAlH4 then H₂O* Periodinane CH3 H3C OH H3C CH CH3 COOH H₂C H₂C CH3 CH3 COOH COOH NO₂ NO₂ NH2 d CN