Question

Find out the pH of 0.065 M HCl
​

Answer 1

Explanation:

Hydrochloric acid is a strong acid that completely dissociates in water.

For a 0.025 M HCl solution the concentration of the hydrogen ions,

[

H

+

]

, is 0.025 moles/liter (i.e. 0.025 M).

pH is defined as

−

log

[

H

+

]

.

Substituting 0.025 into the equation for pH we find that the 0.025 M HCl solution has a pH of -log(0.025) = 1.60.