An electrochemical cell is set up as follows: | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(A) The $E.M.F.$ of a concentration cell is given by $E_{cell} = \frac{0.0591}{n} \log \frac{[H^+]_{cathode}}{[H^+]_{anode}}$. Since $HCl$ is a strong

Vedclass · Accepted Answer

The $pH$ of $0.1 \, M \, HCl$ and $0.1 \, M$ acetic acid is not the same.

Vedclass · Answer

(A) The $E.M.F.$ of a concentration cell is given by $E_{cell} = \frac{0.0591}{n} \log \frac{[H^+]_{cathode}}{[H^+]_{anode}}$. Since $HCl$ is a strong acid,it dissociates completely,whereas $CH_3COOH$ is a weak acid and dissociates partially. Therefore,the concentration of $H^+$ ions in both compartments is different,leading to different $pH$ values. As a result,the $E.M.F.$ of the cell is not zero.

An electrochemical cell is set up as follows: $Pt(H_2, 1 \, atm) | 0.1 \, M \, HCl || 0.1 \, M \, CH_3COOH | (H_2, 1 \, atm) Pt$. The $E.M.F.$ of this cell will not be zero because:

Similar Questions

The acid used in lead storage cells is

Which of the following reactions occurs at the cathode of a common dry cell?

Based on the reaction $\frac{4}{3} \, Al + O_2 \to \frac{2}{3} \, Al_2O_3$,with $\Delta G = -827 \, kJ \, mol^{-1}$ of $Al_2O_3$,what is the minimum $e.m.f.$ required for the electrolysis? $(F = 96500 \, C \, mol^{-1})$

What is wrongly stated about the electrochemical series?

What is a positive and a negative electrode?

Vedclass Test Series

Exam Paper Generator

Online Exam Module