NEET
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- NEET
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- Chemistry
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- Electrochemistry
NEET · Chemistry · Electrochemistry
How can the value of the dissociation constant (K a ) be determined...
How can the value of the dissociation constant (Ka) be determined for a weak electrolyte like acetic acid?
Options
- ABy measuring the concentration of acetic acid
- BBy measuring the conductivity at high concentrations
- CBy using the equation Ka = C⍺ / ⍺
- DBy using the equation Ka = CΛm2 / {Λ°m(Λ°m - Λm)}
Correct answer
D. By using the equation Ka = CΛm2 / {Λ°m(Λ°m - Λm)}
Step-by-step solution
For a weak electrolyte like acetic acid, Ka = C⍺2 /(1- ⍺) =Ka = CΛm2 / {Λ°m2(1 - Λm/Λ°m)} = Ka = CΛm2 / {Λ°m(Λ°m - Λm)}.