ExamBro
ExamBro
AP EAMCET · Chemistry · Electrochemistry

In the Kolbe electrolysis of sodium propanoate, the products \(\mathrm{X}\) and \(\mathrm{Y}\) are formed at respected electrodes. What are \(\mathrm{X}\) and \(\mathrm{Y}\) ?

  1. A \(\mathrm{X}=\mathrm{CH}_3-\mathrm{CH}_2-\mathrm{CH}_2-\mathrm{CH}_3\) at Cathode; \(\mathrm{Y}=\mathrm{H}_2\) at Anode
  2. B \(\mathrm{X}=\mathrm{CH}_3-\mathrm{CH}_2-\mathrm{CH}_3\) at Cathode; \(\mathrm{Y}=\mathrm{H}_2\) at Anode
  3. C \(\mathrm{X}=\mathrm{CH}_3-\mathrm{CH}_2-\mathrm{CH}_2-\mathrm{CH}_3\) at Anode; \(\mathrm{Y}=\mathrm{H}_2\) at Cathode
  4. D \(\mathrm{X}=\mathrm{CH}_3-\mathrm{CH}_3\) at Anode; \(\mathrm{Y}=\mathrm{H}_2\) at Cathode
Verified Solution

Answer & Solution

Correct Answer

(C) \(\mathrm{X}=\mathrm{CH}_3-\mathrm{CH}_2-\mathrm{CH}_2-\mathrm{CH}_3\) at Anode; \(\mathrm{Y}=\mathrm{H}_2\) at Cathode

Step-by-step Solution

Detailed explanation

\(2 \mathrm{CH}_3 \mathrm{CH}_2 \mathrm{CO} \overline{\mathrm{O}^2} \mathrm{Na} \xrightarrow[2 \mathrm{H}_2 \mathrm{O}]{\text { electrolysis }}\) \[ \mathrm{CH}_3 \mathrm{CH}_2-\mathrm{CH}_2 \mathrm{CH}_3+2 \mathrm{CO}_2+\mathrm{H}_2+2 \mathrm{NaOH} \] At anode (oxidation): At…