Balance the following equations that are used in chemical reactions. Show the in

Question

Balance the following equations that are used in chemical reactions. Show the individual balanced half reactions and the final combined redox reaction. It is not necessary to include the spectator ions in the final balanced equation.

D) CH3CH=CH2 + KMnO4 --> CH3CHOHCH2OH + MnO2 (in base)

oxidation half reaction:

reduction half reaction:

final oxidation half reaction:

final reduction half reaction:

addition of two half reactions:

final, canceled and balanced, redox reaction:

E) C6H5-CH2CH2CH3 + NaCr2O7 --> C6H5-COOH + CO2 + Cr 3+ (in acid)

oxidation half reaction:

reduction half reaction:

final oxidation half reaction:

final reduction half reaction:

addition of two half reactions:

final, canceled and balanced, redox reaction:

Explanation / Answer

D)

Reduction half reaction

Mn(+7)------------>>>> Mn(+4)

Oxidation Half reaction

C(-3)---------------->>>>>C(-4)

Therefore combined final, canceled and balanced, redox reaction:

CH3CH=CH2 + KMnO4 --> CH3CHOHCH2OH + MnO2

E)

Reduction half reaction

Cr(+6)---------->>>>>Cr(+3)

Oxidation Half reaction

C(-3)---------------->>>>>C(-4)

Therefore combined final, canceled and balanced, redox reaction:

C6H5-CH2CH2CH3 + Na2Cr2O7 --> C6H5-COOH + CO2 + Cr 3+

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