
To find:
a) Calculate the equilibrium partial pressures of the products and reactants using the given initial partial pressures of
b) Calculate the equilibrium partial pressures of the products and reactants after sufficient

Answer to Problem 14.88QA
Solution:
Equilibrium partial pressures are:
a) | ||
b) | ||
Explanation of Solution
1) Concept:
We need to draw RICE table for the given reaction and initial partial pressure. Then, we can write the
2) Formula:
Here,
difference of total moles of gas on product side and total moles of gas on reactant side.
3) Given:
i) Initial partial pressure:
ii)
iii)
iv)
4) Calculations:
a)
RICE table for the given reaction:
Reaction | ||||
Initial | ||||
Change | ||||
Equilibrium | x |
As
This equation fits the general form of a quadratic equation:
We need to solve this quadratic equation
Here
Therefore,
Plugging these values in equation
Solving this equation we can get two values of
We will use the positive value of
So,
Therefore, the partial pressure of reactant and products is as follows.
b)
In this part, both the initial partial pressures increase by
RICE table for the given reaction:
Reaction | ||||
Initial | ||||
Change | ||||
Equilibrium |
This equation fits the general form of a quadratic equation:
We need to solve this quadratic equation
Here
Therefore,
Plugging these values in equation
Solving this equation, we can get two values of
Here both values are positive.
Therefore, the partial pressure of the reactant and products is as follows.
Conclusion:
Using the RICE table and the equilibrium constant expression for partial pressures, the value of x is calculated. Using the value of x, the partial pressures of all reactant and products is calculated.
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Chapter 14 Solutions
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