Питання 162 з 169 · Аnalytical chemistry

Hydrochloric acid was added into the solution under investigation. The resulting precipitate was filtered, then this filter cake was processed with hot water; after the filtrate cooled, KI solution was added into it. What cation was present in the solution if the precipitate was colored yellow?

1. A Ca2+
2. B Pb2+
3. C Hg2+
4. D Ba2+
5. E Ag+

Правильна відповідь: B. Pb2+