The degree of dissociation of 0.1 N CH3COOH is (given Ka=1×10-5) approximately _________

TS EAMCET · Chemistry · Ionic Equilibrium

The degree of dissociation of $0.1 N {CH}_{3} COOH$ is (given $K_{a} = 1 \times 10^{- 5}$ ) approximately _________

A $1 \times 10^{- 6}$
B $1 \times 10^{- 7}$
C $1 \times 10^{- 3}$
D $1 \times 10^{- 2}$

Verified Solution

Answer & Solution

Correct Answer

(D) $1 \times 10^{- 2}$

Step-by-step Solution

Detailed explanation

Concentration of solution, C=0.1 N Dissociation constant, Kα=1×10-5 We have to find out degree of dissociation, i.e, α Kα=Cα2 ⇒α=KαC ⇒α=1×10-50.1=1×10-2

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

Same subject

Match the following

Column-1 Reaction		Column-2 Main product
A)	$4 {FeCl}_{3} + 3 K_{4} [Fe (CN)_{6}] \to$	I)	${Fe}_{4} {[Fe (CN)_{6}]}_{3}$
B)	${ZnCl}_{2} + 4 NaOH \to$	II)	${FeCl}_{2}$
C)	$2 {FeCl}_{3} + H_{2} S \to$	III)	$Zn (OH) Cl$
		IV)	${Fe}_{3} {[Fe (CN)_{6}]}_{3}$
		V)	${Na}_{2} {ZnO}_{2}$
		VI)	$FeS$

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