Beer: pH = 4.5
[H+] = _3.162 × 10^-5-- M
Water: pH = 7.4
[H+] = _2.51189 × 10^7 M
ph=In chemistry, pH, historically denoting "potential of hydrogen", is a scale used to specify the acidity or basicity of an aqueous solution. Acidic solutions are measured to have lower pH values than basic or alkaline solutions. pH is a measure of how acidic/basic water is. The range goes from 0 - 14, with 7 being neutral. pHs of less than 7 indicate acidity, whereas a pH of greater than 7 indicates a base.
The equation for pH is: pH = -log[H+], where [H+] is the concentration (in molar, aka mol/L) of the H+ ion.
-pH = log[H+]
Then you need to take the antilog of both sides, which is simply applying 10^ on both sides, so you have:
10^(-pH) = 10^(log[H+]
Since 10^log = 1, you have
10^(-pH) = [H+]
learn more about pH here
https://brainly.com/question/172153
#SPJ4