What is the (H+), if the pH of a solution is 3.20?

First of all, the answer has 3 places of accuracy.

The formula for pH is

pH = - log[H+]

Given: Ph = 3.20

Solution

3.20 = - log[H+]

Divide by - 1

-3.20 = log[H+]

Take the antilog of both sides

10^-3.20 = [H+]

[H+] = 6.30 * 10^-4 moles/L This is a measure of concentration.

It can also be written as 0.000630 moles/L