CdCl2 and Na2S
Chapter 5-10
University of Arkansas Little Rock
Mariam R. Shaikh, Xiaomin Tu, Dr. Robert Belford




Question 1
Before watching the movie, predict what are the precipitation and the color of the precipitation.
(A)  Sodium Chloride, clear
(B)  Sodium Chloride, yellow
(C)  Cadmium (II) Sulfide, blue
(D)  Cadmium (II) Sulfide, yellow
 
Hint

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Question 2
What is the general (molecular) equation for the reaction?
(A) 
(B) 
(C) 
(D) 
 

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Question 3
What is the total ionic equation for the reaction?
(A) 
(B) 
(C) 
(D) 
 

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Question 4
What is the net ionic equation for the reaction?
(A) 
(B) 
(C) 
(D) 
 

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Question 5
Identify any spectator ion(s).
(A)  Na+
(B)  Cl-
(C)  both A and B
(D)  none
 

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Question 6
Which one of the following solutions can also form a precipitation with Na2S?
(A)  KCl
(B)  K2S
(C)  PbCl2
(D)  NaCl
 

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