How does pH relate to #H^+#? Organic Chemistry Acids and Bases pH, pKa, Ka, pKb, Kb 1 Answer Truong-Son N. · Media Owl Apr 22, 2015 pH is the #-log[H^+]# where #[H^+]# is the concentration of protons (positively charged hydrogen). If the pH is 2 and there is no #OH^-# whatsoever in solution for some odd reason, then #[H^+] = 10^-2# M #= 0.1 M#. Answer link Related questions What is pH in acids and bases? What are pKa and pKb in acids and bases? What are Ka and Kb in acids and bases? How do you calculate the pH of a buffer solution? How can I calculate the pH of a weak acid with an example? How does Ka change with concentration? How does Ka relate to acid strength? How does molarity affect Ka? How does pH relate to pKa? How does pKa affect equilibrium? See all questions in pH, pKa, Ka, pKb, Kb Impact of this question 960 views around the world You can reuse this answer Creative Commons License