# How can you find the pH if 75 grams of HCl (hydrochloric acid) is put in 5.0L of water?

##
I understand that I have to convert the grams to mol, and I have the molarity, but I don't know if the concentration is of hydrogen or hydroxide ions. Can anybody help me? Thanks!

I understand that I have to convert the grams to mol, and I have the molarity, but I don't know if the concentration is of hydrogen or hydroxide ions. Can anybody help me? Thanks!

##### 1 Answer

Well, let's see...I gets

#### Explanation:

We assume that hydrogen chloride undergoes complete protonolysis in aqueous solution...

And so we calculate the concentration of

We ASSUME (reasonably) that the volume of THE SOLUTION is

And so...

And so it is

The maximum concentration of