Select the statements about acids and bases that are true. Check All That Apply If the ratio of protons (H+) to hydroxide ions (OH-) is ten to one (10:1), then the solution is acidic. If the ratio of protons (H+) to hydroxide ions (OH-) is ten to one (10:1), then the solution is acidic. If the ratio of protons (H+) to hydroxide ions (OH-) is one to ten (1:10), then the solution is acidic. If the ratio of protons (H+) to hydroxide ions (OH-) is one to ten (1:10), then the solution is acidic. Adding a base to an acidic solution will bring the pH of the solution closer to 7. Adding a base to an acidic solution will bring the pH of the solution closer to 7. Acidic compounds are those that release protons (H+) into solution. Acidic compounds are those that release protons (H+) into solution