JEE Main 2024 Chemistry question

Which out of the following is a correct equation to show change in molar conductivity with respect to concentration for a weak electrolyte, if the symbols carry their usual meaning :

(A)Λ²ₘC − KₐΛ°²ₘ + KₐΛₘΛ°ₘ = 0Correct
(B)Λₘ − Λ°ₘ + = 0
(C)Λₘ − Λ°ₘ − = 0
(D)Λ²ₘC + KₐΛ°²ₘ − KₐΛₘΛ°ₘ = 0

Answer: (A)

Solution

For HA ⇌ H⁺ + A⁻, Kₐ = α²C/(1 − α) and α = Λₘ/Λ°ₘ. So α²C + Kₐα − Kₐ = 0, i.e. Λₘ²C/Λ°ₘ² + KₐΛₘ/Λ°ₘ − Kₐ =

See the full step-by-step solution

Create a free account to read the complete working, and practise questions like this in a timed test.

Create a free account

Question ID VK-016433