## % Ionization

Rhea Shah 2F
Posts: 80
Joined: Thu Jul 25, 2019 12:17 am

### % Ionization

What is the % ionization of an acid/base?

405318478
Posts: 75
Joined: Sat Jul 20, 2019 12:16 am

### Re: % Ionization

It can be calculated by (conjugate acid)/(initial base) * 100%.
for an acid, it would be (conjugate base)/(initial acid) * 100%

Posts: 83
Joined: Thu Jul 11, 2019 12:17 am

### Re: % Ionization

what does it mean if x less than 5% of initial, then approximation is ok?

Shail Avasthi 3C
Posts: 86
Joined: Fri Aug 30, 2019 12:17 am

### Re: % Ionization

@AMahadi, if your Ka or Kb is small (<10^-3), then you are allowed to eliminate all x values in the equilibrium expression which follows the form (n-x). This makes calculating the value of x more simple. If the percent ionization of the acid or base is <5%, then this approximation is valid.