JEE Advanced2015ChemistryPractical ChemistryActual
The pair(s) of ions where BOTH the ions are precipitated upon passing H 2 S gas in presence of dilute HCl, is (are)
Options
- AB a 2 + , Z n 2 +
- BB i 3 + , F e 3 +
- CC u 2 + , P b 2 +
- DH g 2 + , B i 3 +
Correct answer
C. C u 2 + , P b 2 +
Step-by-step solution
Precipitate is formed on passing H 2 S in acidic medium i.e., ion must be of group II. C u 2 + , P b 2 + , H g 2 + , B i 3 +