Question

a student is trying to determine if a solution is acidic or basic. she does not have any litmus paper. what would she most likely use to get a reading on her solution?
vinegar
soap
cabbage juice
aquarium water

Explanation:

Cabbage juice is a natural pH - indicator. It changes color depending on whether the solution it is added to is acidic or basic. Vinegar is an acid, soap is a base, and aquarium water is not a reliable indicator for determining the acidity or basicity of an unknown solution.

Answer:

C. cabbage juice