Răspuns:
CH3-CH2⁻¹-OH + KMn⁺⁷O4 + H2SO4-> CH3C⁺³OOH + K2SO4 + Mn⁺²SO4 + H2O
C⁻¹ -4e---C⁺³........................ori 5====> pun 5alcoool , 5acid
Mn⁺⁷ +5e---> Mn⁺²..............ori 4=======> pun4KMnO4, 4MnSO4
5CH3-CH2OH + 4KMnO4 + 6H2SO4--->
5CH3COOH+2K2so4+4Mnso4 + 11H2O
C6H5-CH2⁻¹OH +K2Cr2⁺⁶O7+H2SO4---> C6H5-C⁺³OOH +K2SO4+Cr2⁺³(SO4)3+H2O
C ⁻¹+4e---> C⁺³ ori3====> pun 3 alcool, 3 acid
2Cr⁺⁶-6e---> 2Cr⁺³ ori2===> pun2K2Cr2O7...2Cr2(SO4)3
3C6H5-CH2OH + 2K2Cr2O7 + 8H2SO4---> 3C6H5COOH + 2K2SO4
2Cr2(SO4)3 + 11H2O
Explicație:
