Quiz 2A1
Chapter

Dr. Robert Belford



A 50 mL volumetric flask is weighed and found to have a mass of 27.8763 g. 1.0356 g of KI is added to the flask and it is diluted with water to mark. The flask with solution is weighed and found to have a mass of 78.6173g.

Question 1
What is the mass percent of KI in the solution?
(A)  2.041
(B)  2.0410
(C)  97.959
(D)  none of the above
 
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Question 2
What is the mass percent of water in the solution?
(A)  2.041
(B)  97.9590
(C)  97.96
(D)  none of the above
 
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Question 3
What is the mole fraction of KI in the solution?
(A)  .002256
(B)  0.0022560
(C)  .997744
(D)  none of the above
 
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Question 4
What is the mole fraction of water in the solution?
(A)  .997744
(B)  .99774
(C)  .002256
(D)  none of the above
 
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Question 5
What is the molarity of KI?
(A)  0.12551M
(B)  0.1248M
(C)  1.015M
(D) 
 
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Question 6
What is the molality of KI?
(A)  0.1248m
(B)  0.12551m
(C)  1.015m
(D)  none of the above
 
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Question 7
What is the density of the solution?
(A)  0.1248 g/ml
(B)  0.12551 g/ml
(C)  1.015 g/ml
(D)  none of the above
 
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