Acids have a high concentration of [Hโบ] ions
Explanation:
In order to know about the acids, a solution is acidic when pH < 7
As pH is lower than 7, the pOH > 7
When pH = 7, solution is neutral
When pH is greater than 7, solution is basic
pH = - log [Hโบ]
pOH = - log [OHโป]
Imagine a solution of pure HCl 0.2 M
HCl โ Hโบ + OHโป
[Hโบ] = 0.2 M โ pH = - log 0.2 โ 0.69
pH + pOH = 14
pOH = 14 - 0.69 = 13.31
10^-pOH = [OHโป] โ 10โปยนยณยฐยณยน = 4.89โ10โปยนโด
In conclussion [Hโบ] > [OHโป]