Assume that you have an "unknown" consisting of one of the ions we
studied in lab (Ag+, Ca2+, Ba2+, Pb2+). Based off the following
observations, what ion was in the unknown solution?
Observations:
1. A white precipitate was observed after the addition of hydrochloric
acid.
2. No precipitate was observed after the addition of potassium
chromate.
O Calcium ion
Lead (11) ion
O Barium ion
O Silver ion