Answer:
The answer is B, HNO3 solution of 0.000015 M yields a pH of 4.8.
Explanation:
The equation to find the pH of a solution is the following:
[tex]ph = - log( {h}^{ + } ) [/tex]
Since HNO3 is a strong acid, it almost 100% dissociates according to a 1:1 molar ratio, into hydrogen cations and nitrate anions, meaning the concentration of hydrogen ions is nearly the same as the concentration of the acid sollution.
[tex]ph = - log(0.000015) = 4.8239...[/tex]
We can round that up to 4.8, meaning we have our answer, 0.000015 M.
