Limiting Reagents and Stoichiometry
Chapter 4-12
University of Arkansas at Little Rock
Dr. Robert Belford and Casey Hawkins




Question 1
The molarity of Na3PO4 is 8.000x10-2M, and the molarity of BaCl2 is 1.000x10-1M. If you start with 25.00ml of Na3PO4 and 25.00ml of BaCl2, what is the limiting reagent?
(A)  BaCl2
(B)  Na3PO4
(C)  NaCl2
(D)  None of the above
 
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Question 2
What is the mass of Ba3(PO4)2(s) after the reaction?(MW=601.93g/mol)
(A)  0.5016g
(B)  1.384x10-6g
(C)  0.1672g
(D)  None of the above
 
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Question 3
What is the concentration of Na+ after the reaction?
(A)  0.1000M
(B)  0.1200M
(C)  0.5000M
(D)  None of the above
 
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Question 4
What is the concentration of Cl- after the reaction?
(A)  0.1200M
(B)  0.1000M
(C)  0.2000M
(D)  None of the above
 
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Question 5
What is the concentration PO4-3 after the reaction?
(A)  1.243M
(B)  5.000M
(C)  6.667x10-3M
(D)  None of the above
 
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