Concept explainers
(a)
Interpretation: The partial pressure of ammonia in the container needs to be determined, when the reaction is complete at constant 1.00 atm and at constant volume.
Concept Introduction: The ideal gas equation is the equation which gives the relations between P,V, n and T of gases. It can be written as:
Usually gases do not follow ideal behavior under all conditions of pressure, temperature and volumes. The relation of P, V, n and T of real gases can be given by Vander Waals equation:
Hence
(a)
Answer to Problem 126CP
Explanation of Solution
Number of
Number of
The balance chemical equation for the formation of ammonia:
Hence 1 molecule of
Hence number of
Thus remaining
Number of ammonia molecule formed = 2 x 2 = 4 molecules.
Total molecules at completion of reaction = 4 +4 = 16 molecules
Calculate mole fraction of ammonia:
Calculate partial pressure of
(b)
Interpretation: Interpret the mole fraction of ammonia in the container when the reaction is complete at constant 1.00 atm and at constant volume.
Concept Introduction: The ideal gas equation is the equation which gives the relations between P,V, n and T of gases. It can be written as:
Usually gases do not follow ideal behavior under all conditions of pressure, temperature and volumes. The relation of P, V, n and T of real gases can be given by Vander Waals equation:
Hence
(b)
Answer to Problem 126CP
Explanation of Solution
Number of
Number of
The balance chemical equation for the formation of ammonia:
Hence 1 molecule of
Hence number of
Thus remaining
Number of ammonia molecule formed = 2 x 2 = 4 molecules.
Total molecules at completion of reaction = 4 +4 = 16 molecules
Calculate mole fraction of ammonia:
(c)
Interpretation:Interpret the volume of the container when the reaction complete if the initial pressure is 1.0 atm and volume is 15.0 L. The partial pressure of ammonia is 0.5 atm when reaction is complete.
Concept Introduction: The ideal gas equation is the equation which gives the relations between P,V, n and T of gases. It can be written as:
Usually gases do not follow ideal behavior under all conditions of pressure, temperature and volumes. The relation of P, V, n and T of real gases can be given by Vander Waals equation:
Hence
(c)
Answer to Problem 126CP
Volume = 10.0 L
Explanation of Solution
Initial volume is 15 L. Now, total initial moles are 2n. The final number of moles can be calculated by taking sum of moles of ammonia and moles of nitrogen.
At constant temperature, pressure can be calculated for an ideal gas as follows:
Putting the values,
Thus, the final volume is 10 L.
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Chapter 18 Solutions
Chemical Principles
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