Final answer:
Solutions with a high concentration of H+ have an acidic pH.
Step-by-step explanation:
Solutions with a high concentration of H+ have a acidic pH.
A solution is considered acidic if the concentration of H+ ions ([H+]) is greater than 1 × 10-7 M. The pH of a solution is a measure of the concentration of H+ ions, and it is calculated as the negative logarithm (-log[H+]). Therefore, a solution with a high concentration of H+ ions will have a low pH value, indicating acidity.
For example, household ammonia with a pH of 11.0 is considered basic because its concentration of H+ ions is lower than 1 × 10-7 M. On the other hand, cherries with a pH of 3.6 are considered acidic because their concentration of H+ ions is higher than 1 × 10-7 M.