What is the pH of a 1.0 x 10-4 M solution

Answer: 4

Explanation:

pH is the negative logarithm of hydrogen ion concentration in a solution. pH can be mathematically expressed as;

pH = - log (H+)

where H + is the hydrogen ion concentration.

pH = - log (1.0 x 10-4 M)

pH = - (-4)

pH = 4 (The two minus signs cancelled out, so, the result becomes 4)

Thus, the pH of the solution is 4 (indicating an acidic solution)