Which of the following has the most H+ ions in its solution?
A. Hydrochloric acid solution with a pH of 1.
B. Carbonic acid solution with a pH of 4.
C. Ethanoic acid solution with a pH of 6.5
D. Ammonia solution with a pH of 12.
The lower the pH the greater the concentration of H+ ions. Hydrochloric acid with a pH of 1 is a strong acid and is highly ionised in solution. It has the most H+ ions
