A student overshot the equivalence point when he was using NaOH to determine the

concentration of an unknown acid, HA.

What ions are present in the purple

solution in the flask?

A. H+, A-, Na+ and OH-

B. A-, Na+ and OH-

C. A-, Na+ and H+

the old alchemists made significant contributions to science even though there starting premises were off a bit. their conclusions after failure would steer them into better directions for investigation. science is no more than close observation and the initial mistakes result in rethinking and retrying experiments.

the answer would be b i believe