12-7: Stoichiometric Gas Problems
Chapter 12
Dr. Robert Belford & Rebekah Reinhart
Question 1
What pressure results when 76.3 grams of CaH
_{2}
(s) reacts with water to form H
_{2}
(g) with a volume of 35.2 liters and a temperature of 46.0
^{o}
C?
(A)
0.87atm
(B)
2.70atm
(C)
3.65atm
(D)
NOTA
Hint
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Question 2
How many grams of CaH
_{2}
(s) are needed to form 51.8L of H
_{2}
(g) at STP?
(A)
33.4g
(B)
48.6g
(C)
57.2g
(D)
NOTA
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Question 3
Calculate the temperature at which 4.71 moles of H
_{2}
(g) are formed from the reaction of CaH
_{2}
(s) with H
_{2}
O(l) at a pressure of 2.55atm and a volume of 85.8 liters.
(A)
273
^{o}
C
(B)
293
^{o}
C
(C)
566
^{o}
C
(D)
NOTA
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Question 4
If 36.2 grams of CaH
_{2}
(s) were allowed to completely react with H
_{2}
O(l) at 1.3atm and 18.7
^{o}
C, what would be the resulting H
_{2}
(g) volume?
(A)
31.7L
(B)
41.2L
(C)
53.6L
(D)
NOTA
Hint
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Not answered yet