1. Which of the following will provide the most accurate means of measuring pH? a. bromphenol blue b. litmus paper c. pH paper d. a pH meter a. 2. When a drop of a solution is placed on red litmus paper, the paper turns blue. The solution is a. acidic. b. basic. c. neutral. 3. A solution becomes yellow after the addition of one drop of bromphenol blue. The solution is a. acidic. b. basic. c. neutral. 4. After adding 5 ml. of acid to a solution having a pH of 9.6, the pH changed to 9.5. The solution is a. acidic. b. a buffer. c. a nonelectrolyte. d. a weak electrolyte. 5. Which statement about a pH 5 solution is correct? a. The solution is neutral. b. The solution is a buffer. c. The hydroxide ion concentration is greater than the hydronium ion concentration. d. The hydronium ion concentration is greater than the hydroxide ion concentration. When using bromphenol blue to titrate an acid, what color will the indicator be prior to titration with NaOH solution? b. What color will it be on reaching the normal pH of the stomach?