A compound has a pH of 3 what is the [H+] concentration?

Answer: 0.001 M

Explanation:

pH is the negative logarithm of hydrogen ion concentration in a solution. Mathematically, pH is expressed as

pH = - log (H+)

where H + is hydrogen ion concentration

So, 3 = - log (H+)

(H+) = Antilog (-3)

(H+) = 0.001

Thus, [H+] concentration is 0.001 M