Notifications
Clear all
Conductivity of 0.00241 M acetic acid is 7.896 × 10^-5 S cm^-1. Calculate its molar conductivity and if acetic acid is 390.5 S cm^2 mol^-1, what is its dissociation constant?
0
19/01/2022 6:03 pm
Topic starter
Conductivity of 0.00241 M acetic acid is 7.896 × 10-5 S cm-1. Calculate its molar conductivity and if acetic acid is 390.5 S cm2 mol-1, what is its dissociation constant?
Answer
Add a comment
Add a comment
Topic Tags
1 Answer
0
19/01/2022 6:26 pm
Given, ΔG° = 7.896 × 10-5 S m-1
c = 0.00241 mol L-1
Then, molar conductivity, Λm = \(\frac{K}{c}\)
= \(\frac{7.896 \times 10^{-5} S cm^{-1}}{0.00241\ mol \; L^{-1}}\) x \(\frac{1000 \ cm^3}{L}\)
= 32.76S cm2 mol-1
Again, Λ0m
= 390.5 S cm2 mol-1
α = \(\frac{Λ_m}{Λ_m^0}\)
= \(\frac{32.76 \ S cm^2 \ mol^{-1}}{390.5 \ S cm^2 \ mol^{-1}}\)
Now,
= 0.084
∴ Dissociation constant, Ka = \(\frac{c \alpha^2}{(1 - \alpha)}\)
= \(\frac{(0.00241 \ mol L^{-1})(0.084)^2}{(1 - 0.084)}\)
= 1.86 x 10-5 mol L-1
Add a comment
Add a comment
Forum Jump:
Related Topics
-
Predict the products of electrolysis in each of the following: (i) A dilute solution of H2SO4 with platinum electrodes. (ii) An aqueous solution of CuCl2 with platinum electrodes.
3 years ago
-
Predict the products of electrolysis in each of the following: (i) An aqueous solution of AgNO3 with silver electrodes. (ii) An aqueous solution of AgNO3 with platinum electrodes.
3 years ago
-
Using the standard electrode potentials given in, predict if the reaction between the following is feasible: (i) Fe^3+(aq) and I^- (aq) (ii) Ag^+ (aq) and Cu(s)
3 years ago
-
Three electrolytic cells A, B, C containing solutions of ZnSO4, AgNO3 and CuSO4, respectively are connected in series.
3 years ago
-
A solution of Ni(NO3)2 is electrolysed between platinum electrodes using a current of 5 amperes for 20 minutes. What mass of Ni is deposited at the cathode?
3 years ago
Forum Information
- 321 Forums
- 27.3 K Topics
- 53.8 K Posts
- 0 Online
- 12.4 K Members
Our newest member: Stripchat
Forum Icons:
Forum contains no unread posts
Forum contains unread posts
Topic Icons:
Not Replied
Replied
Active
Hot
Sticky
Unapproved
Solved
Private
Closed