Question

question 6 (2.5 points)
a ph value of ____ has the highest concentration of hydrogen ions.
1
3
5
7
9

Explanation:

The pH scale ranges from 0 - 14. The formula for pH is \(pH=-\log[H^{+}]\), where \([H^{+}]\) is the hydrogen - ion concentration. Rearranging for \([H^{+}]\), we get \([H^{+}]=10^{-pH}\). As the pH value decreases, the hydrogen - ion concentration increases. For example, when \(pH = 1\), \([H^{+}]=10^{-1}=0.1\) M; when \(pH = 3\), \([H^{+}]=10^{-3}=0.001\) M. So, the lower the pH, the higher the \([H^{+}]\).

Answer:

A. 1