Question

Which of the following ranks the acids from weakest to strongest

Answer 1

the lower the pH level, the higher the concentration of the acid

Answer 2

There's something called a pH scale, in which scientists/chemists use to measure the pH of a substance. Also to determine whether it's an acid or a base.

1 to 14

1 - 6 = acid
8 - 14 = base

1 is very acid, and 6 would be less acidic.