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A 0.02 M solution of a weak mono basic acid is 5% ionised. Calculate the ionisation constant of the acid. |
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Answer» Solution :The degree of ionisation and the DISSOCIATION CONSTANT of the weak ACID are RELATED by the equation . `K_a=(alpha^2 C)/(1-alpha)~= alpha^2 C` `alpha=5% (or) 0.05` `K_a=(0.05)^2 xx 0.02=0.00005` `K_a=5xx10^(-5)`. |
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