Jason R. answered • 12/05/19
Tutor
New to Wyzant
Hi my name is Jason, don't hesitate to reach out!
Hi Abby,
Let's start by determining what pH is by definition.
pH = -log(H3O+)
so in this example:
pH = 8.56 = -log(H3O+)
since it is log base 10 the equation can be arrange as so:
10-8.56 = (H3O+)
(H3O+) = 2.75 x10^-9 M
If you get a question like this in the future it will be useful to remember the equation 10-pH = (H3O+)
I hope this was helpful, if you are confused please let me know!
Jason R.
Hi Abby, this sounds like you are probably just rounding up. Make sure this is the case
Report
12/05/19
Abby J.
thank you so much! when I do this I get 3.00 x 10^-9. how do I get from that to the 2.75?12/05/19