Question

What is the pH of a 2.0 × 10-4 M HCl solution?

Answer 1

The answer to your question is 4.

Answer 2

pH = 3.69

Step-by-step explanation:

HCl is a strong acid. It will disscociates completely into dissoluted ions such that,

`[H^+]=2* 10^(-4)\ M`

The formula for pH is given by :

`pH=-log[H^+]\\\\pH=-log(2* 10^(-4))\\\\pH=3.69`

So, the pH of the solution is 3.69.