Methanol fuel cells depend on the following reaction.How many electrons are transferred in this redox reaction per mole of methanol consumed?
2 CH₃ OH(l) + 3 O₂ (g) $\rightarrow$ 2 CO₂ (g) +3H₂ O(l)

Question

Methanol fuel cells depend on the following reaction.How many electrons are transferred in this redox reaction per mole of methanol consumed?
2 CH₃ OH(l) + 3 O₂ (g)

\rightarrow

2 CO₂ (g) +3H₂ O(l)

Quizplus · Accepted Answer

The oxidation state of carbon changes from -1 to +4, a change of 5. The oxidation state of hydrogen changes from -1 to +1, a change of 2. The total change in oxidation state is 5 x 2 + 2 x 3 = 16. Since the reaction involves 2 moles of methanol, the number of electrons transferred is 16/2 = 8.

Methanol Fuel Cells Depend on the Following Reaction →\rightarrow→ 2 CO2 (G) +3H2 O(l) A)3 B)6 C)8 D)12 E)2

Methanol Fuel Cells Depend on the Following Reaction $\rightarrow$ 2 CO₂ (G) +3H₂ O(l)
A)3
B)6
C)8
D)12
E)2