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A solution contains one or more of the following ions: Ag+, Ca2+, and Cu2+. When sodium

Introductory Chemistry | 5th Edition | ISBN: 9780321910295 | Authors: Nivaldo J Tro ISBN: 9780321910295 34

Solution for problem 107P Chapter 7

Introductory Chemistry | 5th Edition

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Introductory Chemistry | 5th Edition | ISBN: 9780321910295 | Authors: Nivaldo J Tro

Introductory Chemistry | 5th Edition

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Problem 107P

PROBLEM 107P

A solution contains one or more of the following ions: Ag+, Ca2+, and Cu2+. When sodium chloride is added to the solution, no precipitate occurs. When sodium sulfate is added to the solution, a white precipitate occurs. The precipitate is filtered off and sodium carbonate is added to the remaining solution, producing a precipitate. Which ions were present in the original solution? Write net ionic equations for the formation of each of the precipitates observed.

Step-by-Step Solution:

Solution 107P

Step 1:

Add NaCl - no precipitate has formed - Conclusion : Ag+ not present.

Step 2: 

Add Na2SO4 with Ca2+ - white precipitate was formed. Hence Ca2+ ion is present in the solution.

The net ionic equation is,  

Ca2+(aq) + SO4 2- (aq) → CaSO4(s)

Step 3 of 3

Chapter 7, Problem 107P is Solved
Textbook: Introductory Chemistry
Edition: 5
Author: Nivaldo J Tro
ISBN: 9780321910295

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A solution contains one or more of the following ions: Ag+, Ca2+, and Cu2+. When sodium