Question

Hydroxyl ion concentration oh in case of sodium acetate can be expressed as dissociation constant of ch3 cooh and c is the concentration of sodium acetate

Answer 1

Hi,

Hydroxyl ion concentration oh in case of sodium acetate can be expressed as dissociation constant of ch3 cooh and c is the concentration of sodium acetate.

I don't know whether I am the one who is not understanding this question, but I think some information is lacking.

Yes the question was a bit correctly phrased to some point but it is like you have omitted some information making it difficult to be solved.

Please consider adding the details.

Answer 2

Answer:

Explanation:CH3COONa (WASB)

CH3COO~ + H20 = CH3COOH +OH~

C C O O

C(1-h) C(1-h ) Ch Ch

We know,

K (hydrolysis) = Ch^2

h = (K/ C) ^1/2

We know Kw =Kh * Ka

h =( Kw / Ka *C) ^1/2

Now from rnx

[OH~] = Ch

Putting value of h

= C (Kw / Ka *C) ^1/2

= (Kw * C / Ka) ^1/2

Hence answer C is correct