Question

If object A is placed on the pH scale at pH = 3 and object B is placed at pH = 8, which of the following must not be true?

A. Object B has a higher hydroxide ion concentration than object A.
B. Object B is closer to a neutral pH than object A.
C. Object A is an acid and object B is a base.
D. Object A has a lower hydronium ion concentration than object B.

I am guessing answer B. What do you guys think?

Answer 1

I believe the correct answer is D. Because object A on the pH scale reads pH=3. Which means it is more acidic in nature and thus possess a greater hydrogen or hydronium ion concentration than object B, which has a higher value on the pH scale. Object B would thus have a lower hydronium ion concentration than Object A.