Question

Calculate the pH of a 0.200 M HCl solution at 25°C

A) 0.30
B) 1.30
C) 2.30
D) 3.30

Answer 1

The pH of a 0.200 M HCl solution at 25°C is 0.70.

Step-by-step explanation:

To calculate the pH of a 0.200 M HCl solution at 25°C, we need to use the equation pH = -log[H3O+]. In this case, since HCl ionizes completely in water, the concentration of H3O+ ions is equal to the concentration of HCl, which is 0.200 M. Substitute this value into the equation: pH = -log(0.200) = 0.70

Therefore, the pH of the 0.200 M HCl solution is 0.70. None of the given options (A, B, C, D) match this pH value.