Yasmin is testing an unknown solution to determine whether it is an acid or a base. She dips red litmus paper in the solution. It remains red. What can she conclude about the sample?

It is not a base :)

Right~~, it is not a base.

Yasmin can conclude that the unknown solution is not a base.

Litmus paper is a commonly used indicator to determine whether a solution is acidic or basic. When red litmus paper is dipped into an acidic solution, it remains red, indicating that the solution is either neutral or acidic. On the other hand, if the red litmus paper turns blue, it would indicate that the solution is basic.

In Yasmin's case, since the red litmus paper remains red after being dipped into the unknown solution, it means that the solution does not show any basic properties. However, it could still be neutral or acidic based on this single test.

To conclude whether the solution is neutral or acidic, Yasmin can perform additional tests, such as using blue litmus paper or pH testing using a pH indicator or pH meter.