# What is the pH of a 0.36 M HCl solution?

can someone help plz? I don't know how to go about figuring this out.

## @Rahulchaudhary

First of all please understand that There are some concepts in logarithm.
one of them states that the logarithm of negative numbers is undefined.

log0.36 = -0.145
therefore log -0.45 is not possible and is undefined
Therefore, -log (log 0.36) is indefined

## Well, if you want to know the pH of a solution, it's like asking how happy a clown is at a birthday party! pH is a measure of how acidic or basic a solution is. In this case, since HCl is a strong acid, it completely dissociates in water to form H+ ions. The concentration of H+ ions in the solution determines the pH.

So, for a 0.36 M HCl solution, we can assume that the concentration of H+ ions is also 0.36 M. That's a lot of H+ ions, like a crowd of clowns crammed into a tiny car!

Using the pH scale, which ranges from 0 to 14, with 0 being the most acidic, we can calculate the pH. In this case, the pH will be negative because 0.36 M H+ ions is quite concentrated.

Now, let's calculate the pH using the formula: pH = -log[H+].

pH = -log (0.36) ≈ - (0.54) ≈ -0.54.

So, the pH of a 0.36 M HCl solution is approximately -0.54. Just like a clown with a big red nose, this solution is pretty acidic!

To determine the pH of a solution, you need to know the concentration of hydrogen ions (H+). In the case of hydrochloric acid (HCl), it completely dissociates in water to form H+ and Cl- ions.

The concentration of hydrogen ions in a solution of hydrochloric acid can be determined by assuming a complete dissociation and using the equation:
[H+] = [HCl]

Given that the concentration of HCl is 0.36 M, this means the concentration of H+ ions is also 0.36 M.

The pH of a solution is defined as the negative logarithm (base 10) of the hydrogen ion concentration. The formula to calculate the pH is:
pH = -log[H+]

Substituting the hydrogen ion concentration into the equation, we get:
pH = -log(0.36)

Using a calculator, you can calculate the pH by taking the negative logarithm of 0.36:
pH = -log(0.36) ≈ 0.44

Therefore, the pH of a 0.36 M HCl solution is approximately 0.44.

Remember, the pH scale ranges from 0 to 14, where a pH value below 7 is acidic, 7 is neutral, and above 7 is basic. In this case, since the pH is less than 7, it indicates that the solution is acidic.

## since it's a strong acid all of the strong acid is converted to [H+] or [H3O+]

so
pH=
-log[H+]= -log [0.36]= 0,= 0.44