InterviewSolution
Saved Bookmarks
InterviewSolution
| 1. |
Which of the following reaction takes place at cathode in electro chemical manufacture of adiponitrile from acrylonitrile?(a) H2O →2H^++\(\frac{1}{2}\) O2+ 2e^–(b) 2CH2=CHCN+2H2 O+2e^–→NC – (CH2)4 – CN(c) 2CH2=CHCN+2H2 O+2e^–→NC – (CH2)4 – CN+2OH^–(d) 2CH2=CHCN+2H2 O→NC – (CH2)4 – CN+\(\frac{1}{2}\) O2This question was addressed to me during a job interview.The above asked question is from Inorganic Chemical in division Inorganic Chemical Industries of Chemical Technology |
|
Answer» CORRECT option is (c) 2CH2=CHCN+2H2 O+2e^–→NC – (CH2)4 – CN+2OH^– To EXPLAIN I WOULD say: Reaction H2O →2H^++\(\frac{1}{2}\) O2+ 2e^– takes place at anode since it is an oxidation reaction. In the reaction 2CH2=CHCN+2H2O + 2e^– → NC-(CH2)4-CN, charge is unbalanced. Reaction2CH2=CHCN+2H2O+2e^–→NC-(CH2)4-CN+2OH^– takes place at cathode. |
|