Question

What makes a compound an acid?

a. It dissolves into Hydrogen ions in water (H+ and H3O+)
b. It has a pH higher than 7
c. It dissolves into Hydroxide ions in water (OH-)
d. It cannot be mixed with oil

Answer 1

A. Dissolves into hydrogen ions in water

We know is B is wrong because pH higher than 7 is basic and not acidic

C is wrong because having more OH is basic which makes the compound a base rather than acid

Although D is also correct, the most likely answer is A