Помогите, пожалуйста?? с задачками 9 и 10, мне непонятно.

9)CH3-CH(CH3)-CH3+Br2-->CH3-CBr(CH3)-CH3+HBr
CH3-CBr(CH3)-CH3+KOH(C2H5OH)-->CH3-C(CH3)=CH2+KBr+H2O
5CH3-C(CH3)=CH2+8KMnO4+12H2SO4-->5CH3-C(O)-CH3+5CO2+4K2SO4+8MnSO4+17H2O
10)C3H6+HBr-->CH3-CH2-CH2Br
CH3-CH2-CH2Br+KOH(C2H5OH)—>CH3-CH=CH2+KBr+H2О
CH3CH=CH2+2KMnO4+3H2SO4→CH3COOH+K2SO4+2MnSO4+4H2O+CO2

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