to find pH, you need this formula: pH= -log [H+]
as you can see, we need to find first the concentration of H+.
you find it, we can use the ka value. Ka is the dissociation constant for acid and it can be used to determine the H+ concentration
Ka= (x)^2/ initial concentration
x = [H+], so all we need to do is solve for X.
ka= 4.6x10-4
initial= 2.0M
so now the formula looks like this:
4.6x10-4= (x)^2/ 2.0
x=0.0303 = [H+]
now that we have the H+ concentration, we can plug it in the pH formula to get our answer
pH= -log (0.0303)= 1.52
