Janice mixed an orange solution of sodium sulfide with a clear solution of hydrochloric acid. She noticed after a minute that the
solution smelled something like rotten eggs.
What could she reasonably infer from the odor released by the solution?
A. Hydrochloric acid must smell like rotton eggs.
B.
A chemical reaction may have occurred.
C.
A chemical reaction must have occurred.
D. Chemical changes always produce odors.