Explanation:
Formula to calculate pH is as follows.
pH = [tex]-log[H^{+}][/tex]
It is given that pH is 6.8. Therefore, calculate the concentration of hydrogen ions as follows.
pH = [tex]-log[H^{+}][/tex]
6.8 = [tex]-log[H^{+}][/tex]
[tex][H^{+}][/tex] = antilog (-6.8)
= [tex]1.58 \times 10^{-7}[/tex] molarity
Thus, we can conclude that [tex][H^{+}][/tex] is [tex]1.58 \times 10^{-7}[/tex] molarity.
