Combined 2 State and Stoichiometric Problems
Chapter 12
University of Arkansas at Little Rock
Dr. Robert Belford




Question 1
What is the volume of a rigid container if it contains 0.300 moles of N2(g) at 298 K and 786torr?
(A)  23.6L
(B)  7.09L
(C)  2.48L
(D)  None of the above
 
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Question 2
What would be the final pressure if 0.250 mols of N2 was added to the gas in question one and the rigid container was heated to a final temperature of 324K?
(A)  1.40atm
(B)  6.90atm
(C)  2.06 atm
(D)  none of the above
 
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Question 3
What would the pressure be if you isothermally (at constant temperature) added 0.900 mol of H2 to the gas in question number 1? Do not consider a reaction to occur
(A)  4.14 atm
(B)  6.80atm
(C)  1.06 atm
(D)  none of the above
 
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Question 4
Consider the gas mixture in question number three. Nitrogen and Hydrogen react to form Ammonia. How many moles of ammonia are produced after the reaction>
(A)  0.200
(B)  0.400
(C)  0.600
(D)  none of the above
 
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Question 5
The formation of ammonia from the reaction of nitrogen and hydrogen is exothermic. What would be the final pressure of the gas in question 4 if the final temperature is 384K?
(A)  2.67
(B)  23.6
(C)  0.038
(D)  none of the above
 
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Question 6
An expandable 29.3L container has 0.400 moles N2 and 0.800 moles H2 at 298K and 760. torr before reaction. What is the final temperature after reaction if the pressure increases to 780 torr and the volume decreases to 17.1L?
(A)  208K
(B)  324K
(C)  580K
(D)  None of the above
 
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