1. Tardigrade
  2. Question
  3. Chemistry
  4. The molar conductivity of acetic acid at infinite dilution is 390.7 and for 0.01 M acetic acid is 3.907 S cm2 mol-1. What is the pH of solution?

Question Error Report

Thank you for reporting, we will resolve it shortly

Back to Question

Q. The molar conductivity of acetic acid at infinite dilution is $390.7$ and for $0.01\, M$ acetic acid is $3.907\, S\, cm^{2} mol^{-1}$. What is the $pH$ of solution?

Electrochemistry

Solution:

$\alpha=\frac{\wedge_{m}^{c}}{\wedge_{m}^{o}}=\frac{3.907}{390.7}=0.01$
image
$\therefore \left[H^{\oplus}\right]=c \alpha=0.01 \times 0.01=10^{-4} M$
$P H=-\log \left(10^{-4}\right)=4$