How does acid affect pH? Chemistry Acids and Bases pH 1 Answer JJ Sep 9, 2017 pH lowers Explanation: Acidic molecules and compounds have a low pH (< 7). When you increase the acidic content of a solution, you are decreasing the pH. This is due to the concentration of hydrogen ions increasing. Answer link Related questions How do you determine pH from pKa? How do pH values of acids and bases differ? How do you calculate something on a pH scale? How do you calculate pH diprotic acid? How do you calculate pH from acid dissociation constant? How do you calculate pH of acid and base solution? Why is the pH scale 0-14? Is pH a measure of the hydrogen ion concentration? How does solubility affect pH? How does pH relate to pKa in a titration? See all questions in pH Impact of this question 2398 views around the world You can reuse this answer Creative Commons License