How could a student determine whether an unknown chemical is an acid? (2 points)
test the hydrogen ion concentration in the sample.
measure the boiling point of the sample.
weigh the sample before and after adding salt.
determine whether the sample has surface tension.

Option (a) is the correct answer.

Explanation:

Acids are the species that contains number of hydrogen ions.

Foe example, HCl is an acid.

Whereas bases are the species that contain hydroxide ions.

For example, NaOH is a base.

Therefore, in order to check whether an unknown chemical is an acid we can test the hydrogen ion concentration in the sample.

As this can lead to detection of the sample.

b.final

since electrons are negative the answer is neagtaive