A student is given a set of test tubes filled with solutions. Which properties can they use to identify the test tubes filled with basic solutions?

Question

A.
Basic solutions accept hydrogen ions, have a pH greater than 7, and conduct electricity.
B.
Basic solutions release hydrogen ions, have a pH lower than 7, and conduct electricity.
C.
Basic solutions both release and accept hydrogen ions, have a pH of 7, and can weakly conduct electricity.
D.
Basic solutions release hydrogen ions, have a pH greater than 7, and can weakly conduct electricity.

Answer 1

To identify test tubes filled with basic solutions, the student can use the following properties:

A. Basic solutions accept hydrogen ions, have a pH greater than 7, and conduct electricity.

This statement correctly describes basic solutions: they accept hydrogen ions (protons), they have a pH greater than 7, and they can conduct electricity due to the presence of ions in the solution.

The other options incorrectly describe the properties of basic solutions:

• B. Basic solutions do not release hydrogen ions; they accept them.
• C. Basic solutions do not have a pH of 7; that is neutral.
• D. Basic solutions do not release hydrogen ions; they accept them.

Therefore, the correct answer is A.