Grade 12th passPhysical Chemistry
.2 molar solution of formic acid is 3.2% ionized.its ionization constant is
.2 molar solution of formic acid is 3.2% ionized.its ionization constant is
1 Answer
Arun
Since
K alpha = {C (alpha)^2}/1-alpha
Here C= 0.2 M
alpha = 3.2% or 0.032
HCOOH = H+ + COOH-
Here C= 0.2 M
alpha = 3.2% or 0.032
HCOOH = H+ + COOH-
K alpha = [COOH-][H+]/[HCOOH]
=( C alpha × C alpha )/C (1-alpha)
= (0.2×0.032)^2/(0.2×0.968)
= 2.1×10^-4
=( C alpha × C alpha )/C (1-alpha)
= (0.2×0.032)^2/(0.2×0.968)
= 2.1×10^-4
Regards
Arun (askIITians forum expert)
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