One mole of
Interpretation:
The total pressure of the system at equilibrium is to be calculated.
Concept introduction:
According to Dalton’s law, the total pressure of the mixture oftwo or more nonreactive gases is equal to the individual partial pressures of the gases present in the mixture. The pressure applied by a gas in a mixture of gases is known asitspartial pressure.
Answer to Problem 79AP
Solution:
Explanation of Solution
Given information:
The
One mole of
The mole fraction of
Thetable for the number of moles ininitialchange and equilibrium for thereaction is given as follows:
The mole fraction of ammonia in the reaction is calculated by the following expression:
Substitute the values of number of moles of ammonia and total number of moles in the above equation as follows:
Substitute
On solving further,
Substitute the value of
The mole fractions of
For
For
The partial pressures of each component are equal to the product of the respectivemole fractions and the total pressure. Hence, the expressions for partial pressures of the three gases are given as follows:
The equilibrium constant expression is given as follows:
Here,
Substitute the values of
On solving further,
The total pressure of the system at equilibrium is
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Chapter 15 Solutions
Chemistry
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