Weak acid HX has dissociation constant 1 10⁻⁵ . Calculate the percent dissociation in its 0.1 M solution.

Step-by-step solution

aligned & K _ a =1 10⁻⁵, c =0.1 M K _ a & = ^2 c & = K _ a c = 1 10⁻⁵ 0.1 = 1 10⁻⁴ =0.01 aligned aligned & = Percent dissociation 100 & Percent dissociation = 100 & =0.01 100=1.0 % & aligned