Question

you have three separate aqueous acid solutions, all at 0.25M. They are hydrochloric acid, acetic acid,...

you have three separate aqueous acid solutions, all at 0.25M. They are hydrochloric acid, acetic acid, and hydrocyanic acid. What is the relative order of their electrical conductivity and explain

Homework Answers

Answer #1

electrical conductivity depends on their Pka. acids having less Pka will have more electrical conductivity.

HCl is strong acid it will fully dissociated in solution medium and it's Pka is ~ -7

acetic acid is weak acid having PKa 4.756 having less conductivity than HCl

hydrocyanic acid also a weak acid having PKa 9.31 having less conductivity than HCl and acetic acid

Hence relative order of their electrical conductivity = HCl > Acetic acid > hydrocyanic acid

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