How to find percent ionization

[305926758]

What is the equation to find percent ionization?

[Helen Xie 2K]

(Equilibrium concentration of ionized acid or base / original concentration of acid or base) x 100% = percent ionization

The eq concentration of the ionized acid or base also means the amount of H3O+ or OH- formed when equilibrium is reached

[Bailey Shioya 2D]

Percent ionization is the amount of a compound (acid or base) that has been dissociated and ionized compared to the initial concentration of the compound. Thus, we can calculate percent ionization using the fraction, (concentration of ionized or dissociated compound in moles / initial concentration of compound in moles) x 100.

[Miyu Tang Dis3I]

If you use the ICE table, when you find x, that should be the equilibrium concentration amount that you can use to find percent ionization.

[Rebecca_Park_1G]

Agreed with all the responses above!

Just wanted to emphasize that percent ionization uses original concentration-this is different from the calculation for Ka where we use the original concentration minus x, so it’s important we don’t get the two confused!

[Brandon_G_1H]

Hello! How I memorized the equation was just by putting the X value I got from solving the equation from the ICE table over the original concentration of acid or base usually given in the problem. Then multiplied by 100%.

[Emily Lee 2H]

To find the percent ionization you do (X/initial concentration)(100%).

[jennacostello8]

For an acid, percent deprotonated= (concentration of A-)/(initial concentration of HA) x 100
when the equation is HA(aq)+H20(l)--->H30+(aq)+A-(aq)

For a base, percent protonated= (concentration of HB+)/(initial concentration of B) x 100
when the equation is B(aq)+H20(l)--->HB+(aq)+OH-(aq)

[Vivian_Lau_2D]

Hello. To calculate percent ionization (for an acid), you divide the ionized compound's equilibrium molar concentration by the initial compound's molar concentration and multiply by 100. To calculate percent protonation (for a base), you divide the dissociated compound's equilibrium molar concentration by the initial compound's molar concentration and multiply by 100. Hope this helps!

[Julia_Wong_1H]

I agree with the prior responses! To put it simply, % ionized = ((ionized) / (ionized - unionized)) x 100

[Ojas Sharma 2G]

Using an ice table, you can calculate the amount of ion that is produced and compare that to the initial concentration to find percent ionization. (Ion concentration)/(initial concentration) X 100%