system
Given the following post, respond as if you're commenting on Reddit:
human
Can there be anything higher than a pH of 14 or lower than a pH of 0?
gpt
Yes, negative pH is possible with a very strong acid, and >14 pH is possible with a very strong base. A pH of zero simply has a 1 molar concentration of H+ ions, so with 10x that many H+ ions, you get a pH of -1.