The standard cell potential (Ecell) of a fuel cell based on the oxidation of methanol in air that has been used to power television relay station is measured as 1.21 V The standard half cell reduction

Question

The standard cell potential (Ecell) of a fuel cell based on the oxidation of methanol in air that has been used to power television relay station is measured as 1.21 V The standard half cell reduction potential for O2 O H / O 2 E is 1.229 V. Choose the correct statement:

(A) The standard half cell reduction potential for the reduction of CO2 OH CH / CO 2 E is 19 mV
(B) Reduction of methanol takes place at the cathode.
(C) Oxygen is formed at the anode.
(D) Reactants are fed at one go to each electrode.

Prashant Kotian · Accepted Answer

Correct answer: A. E0cell = (E0RP)Cathode – (E0RP)Anode E0cell = O H / O 2 E – OH CH / CO 2 E 1.21 = 1.129 – OH CH / CO 2 E OH CH / CO 2 E = 0.019 V = 19 mv

💡 Solution & Explanation

Practice 22,000+ questions like this