[madscientist]

how do i get the molarity from pH?
the only quantative info i have to work with is: 75.0mL
(0.075 L) solution of "HCl", with a pH of 1.56.

my working is: [H+] = 10-pH = 10-1.56 = 2.75x10^-2M\L

But the question states: "From it's pH, calculate the molarity of HCl".

have I done this with my working or have I just gotten the hydrogen ion concentration ?

Any help or just a point in the right direction would be much appreciated.

[AWK]

For strong acids a concentrationacid and the concentration of H+ are the same.

[Borek]

For strong monoprotic acids, to be precise

[madscientist]

 Thanks alot for the quick response!!

hopefully i can return tha favour one day