0.1 M HX (weak acid) is taken in a containerat equilibrium pH of solution is 4. Select thecorrect statement if temperature of reaction is25^° C(1) Dissociation constant of acid is 10(2) Dissociation constant of acid is 10-3Degree of dissociation of acid is 10-3(4) Degree of dissociation of acid is 10-5

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a weak acid HX has a dissociation constant 10^-5. the ph of 0.1M solution of this acid will be

pH of 0.1 M weak acid solution is 4. What is the dissociation constant of the acid ?

0.1

K_{a} = 1.8 \times 10^{- 5}

1 \times 10^{- 5}

1 \times 10^{- 5} M .

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