Question

Methanol fuel cells depend on the following reaction. How many electrons are transferred in this redox...

Methanol fuel cells depend on the following reaction. How many electrons are transferred in this redox
reaction as written? Please give DETAILED explanation.

2CH3OH + 3O2  2CO2 + 3H2O


a. 3

b. 6

c. 8

d. 12

e. 2

Science   Chemistry   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

Oxidation at anode    2CH3OH + 3O2 <=====>2CO2 + 6H+ + 6e−

Reduction at cathode   3/2O2 + 6H+ + 6e− <====> 3H2O

Overall reaction        2CH3OH (aq) + 3O2 (g) =====> 2CO2(g) + H2O (l)

Hydrogen from the fuel gas stream is consumed at the anode, hydrogen ions and electrons are produced. At the cathode, oxygen combines with electrons and hydrogen ions from the electrolyte to produce water. In this redox reaction 12e− are transferred.

So, Option d. 12 is correct

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Balancing the following redox reaction in an acidic solution. How many electrons are transferred in this...
Balancing the following redox reaction in an acidic solution. How many electrons are transferred in this reaction? Cr2O7 2-(aq) + Cl- (aq)  Cr3+ (aq) Cl2 (g)
Certain race cars use methanol (CH3OH; also called wood alcohol) as a fuel. Methanol has a...
Certain race cars use methanol (CH3OH; also called wood alcohol) as a fuel. Methanol has a molecular mass of 32.0 g/mol and a density of 0.79 g/mL. The combustion of methanol occurs according to the following equation: 2CH3OH + 3O2 → 2CO2 + 4H2O In a particular reaction 2.00 L of methanol are reacted with 80.0 kg of oxygen. What is the limiting reactant? What reactant and how many grams of it are left over? How many grams of carbon...
1) How many electrons are transferred in the following reaction: 4 Fe + 3 O2 =...
1) How many electrons are transferred in the following reaction: 4 Fe + 3 O2 = 2 Fe2 O3 a) 8 b) 12 c) 10 d) 6 e) 3 2) In thus unbalanced chemical reactiion, which element is oxidized and which is reduced? Cl2 + NaBr = NaCl + Br2 a) sodium is reduced, chlorine is oxidized b) chlorine is reduced, sodium is oxidized c) chlorine is oxidized, bromine is reduced d) bromine is oxidized, chlorine is reduced
For the oxidation-reduction reaction equation given here, 4Al + 3O2 --> 2Al2O3 indicate how many electrons...
For the oxidation-reduction reaction equation given here, 4Al + 3O2 --> 2Al2O3 indicate how many electrons are transferred in the formation of 1 formula unit of product. _ _ _ _ _ _
Obtain the balanced equation, using the lowest possible whole numbers, for the redox reaction in acidic...
Obtain the balanced equation, using the lowest possible whole numbers, for the redox reaction in acidic solution: CH3OH(aq) + Cr2O72−(aq) → CH2O(aq) + Cr3+(aq) How many H+ appear in the final balanced equation, and which side are they on? A) 8, reactant side B) 8, product side C) 14, reactant side D) 6, product side E) 12, reactant side Answer is A. Please explain step by step.
How many electrons are removed when one molecule of glucose is metabolized through glycolysis? A. 8...
How many electrons are removed when one molecule of glucose is metabolized through glycolysis? A. 8 B. 6 C. 12 D. 4 E. 2
39) Aquaporins and most enzymes are similar in many aspects, but NOT in this: A) They...
39) Aquaporins and most enzymes are similar in many aspects, but NOT in this: A) They are specific for certain molecules B) They are proteins C) They are catalysts D) They have three-dimensional (3-D) structure 40) Organisms do NOT use heat to overcome EA and speed up chemical reactions. Why not? A) Heat would only speed up endergonic reactions B) High temperature might denature cellular proteins C) The energy barrier for most chemical reactions could not be surmounted by heat...
1. I need to know how many cells/mL are in a culture, and I decide to...
1. I need to know how many cells/mL are in a culture, and I decide to do a plate count. I make dilutions and plate 0.1 mL of each dilution on to TSA plates. I count 20 colonies on a 10-4 dilution plate. How many cells (CFU’s) per mL are likely in my original culture? 2. If someone prepares and plates a 10-6 dilution of an E. coli culture, this is a _____ dilution. 1:100 1:10,000 1:1,000,000 1:1,000 3. You...
1. How many ATP are made in the citric acid for each Acetyl COA? 2. What...
1. How many ATP are made in the citric acid for each Acetyl COA? 2. What happens to glucose at the end of oxidation in the Citric Acid Cycle? 3. If a mutation deletes a mRNA what is the result? 4. When an enzyme accelerates a reaction rate, what does the enzyme do, thermodynamically (energy-wise)? 5. What is the location on an enzyme where the reactants bind called? 6. When an enzyme runs a reaction, what happens to the enzyme...
1. Which of the following pairs of redox molecules is NOT in the proper order of...
1. Which of the following pairs of redox molecules is NOT in the proper order of lower to higher reduction potential? a.) FAD bound to succinate dehydrogenase then FMN b.) FMN then Fe-S from Complex I c.) Fe-S cluster from Complex II then CoQ d.) Cyt a3 then oxygen e.) all are correct 2. put the following components of the electron transport chain in order. a.) cytochrome c b.) coenzyme Q c.) oxygen d.) Fe-S cluster from Complex I e.) flavin...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT