Which of the following substances is most acidic?
a
rain water with a pH of 5.5
b
blood with a pH of 7.4
c
sea water with a pH of 8.0
d
bleach with a pH of 13.0
1 answer
The correct answer is a) rainwater with a pH of 5.5. A lower pH indicates higher acidity, and a pH of 5.5 is lower than the pH of blood (7.4), sea water (8.0), and bleach (13.0).
1 answer