14-1: Molarity
Chapter 14-1
Dr. Robert Belford & Rebekah Reinhart
Question 1
Calculate the molarity of a solution containing 15.2g H
3
AsO
4
in 600mL of water. The molecular weight of H
3
AsO
4
is 141.94g/mol
(A)
0.178M
(B)
0.0643M
(C)
15.6M
(D)
None of the above
Hint
Your response
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Question 2
Given the molecular weight of H
3
AsO
4
is 141.94g/mol, calculate the mass of H
3
AsO
4
required to prepare a 0.75M solution in 400mL of water
(A)
2.11g
(B)
42.6g
(C)
26.1g
(D)
None of the above
Hint
Your response
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Question 3
What volume of water must be added to 47 grams of KBr to make a 2.6M solution? The molecular weight of KBr is 119g/mol
(A)
215mL
(B)
320mL
(C)
152mL
(D)
None of the above
Hint
Your response
Not answered yet
Question 4
How many grams of KBr are required to make 50mL of a 1.2M solution in water? The molecular weight of KBr is 119g/mol.
(A)
2.86g
(B)
7.14g
(C)
36.3g
(D)
None of the above
Hint
Your response
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Question 5
Calculate the molarity of a solution containing 13.41g of AgCl
2
in 250mL of water. The molecular weight of AgCl
2
is 178.8g/mol.
(A)
3.32M
(B)
9.60M
(C)
0.300M
(D)
None of the above
Hint
Your response
Not answered yet