A solution containing all of the cations from both Group I and Group IV (look up

Question

A solution containing all of the cations from both Group I and Group IV (look up the ions in Group IV) is treated with 6 M HCl. A white precipitte forms.

a) The precipitate contains which "ion(s)"? (Be sure to list the ions individually)

b) The supernatant contains which "ion(s)"? (Be sure to list the ions individually)

Background: Group I Separation Scheme Group l Unknown 6M HCI AgCI, PbCl2, Hg2Cl Groups II, II, IV H20, Heat AgCI, Hg2Cl2 ppt Pb2*(aq) K2Cro 6M NH3 PbCrO yellow ppt,_ Hg / HgNH2CI gray ppt Ag(NH3)2 HNO3 AgCl white ppt

Explanation / Answer

The precipitate contains group I cations Ag+, Hg2+2 , Pb+2 only. the Group IV cations Ca+2, Ba+2 and Sr+2 remain in the supernatant solution as their chlorides are soluble in water.

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.