The group Zn(NO 3 ) 2 ,Zn(CO 3 ) 2 , ZnCl 2 , and ZnS containssome salts which a

Question

The group Zn(NO3)2,Zn(CO3)2, ZnCl2, and ZnS containssome salts which are only very silghtly soluble in pure water. Ofthose salts, which one(s) should be significantly more soluble inacidic solution than in pure water? A. Zn2(NO3)2,Zn(CO3)2, and ZnCl2 B. Zn(No3)2,Zn(CO3)2 C. ZnCl2, and ZnS D. Zn(CO3)2, and ZnCl2 E. Zn(CO3)2, and ZnS Please EXPLAIN youranswer. The group Zn(NO3)2,Zn(CO3)2, ZnCl2, and ZnS containssome salts which are only very silghtly soluble in pure water. Ofthose salts, which one(s) should be significantly more soluble inacidic solution than in pure water? A. Zn2(NO3)2,Zn(CO3)2, and ZnCl2 B. Zn(No3)2,Zn(CO3)2 C. ZnCl2, and ZnS D. Zn(CO3)2, and ZnCl2 E. Zn(CO3)2, and ZnS Please EXPLAIN youranswer. E. Zn(CO3)2, and ZnS Please EXPLAIN youranswer.

Explanation / Answer

S2- and CO32- are the conjugate bases of theweak acids H2S and H2CO3 When ZnS and Zn(CO3)2 dissolve, the resulting S2- andCO32- will interact with H+ from the acid. The formationof the acid will consume the conjugate bases, driving moredissolving of ZnS (for S2-) and Zn(CO3)2(CO32-) NO3- and Cl- are the conjugate bases of strong acids; so Cl- andNO3- will negligibly interact with H+ to reform the acids. Answer is E

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

---

---

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