To find:
We need to find the equilibrium concentration of
Answer to Problem 14.101QA
Solution:
The equilibrium concentrations for all the species in the given reaction are:
Explanation of Solution
1) Concept
The system initially contains no product. This means that the reaction quotient
Let x be the increase in the concentration of
2) Given:
An equilibrium reaction equation for formation of nitrogen trioxide is given as:
i)
ii) Volume of flask is
iii) Initial mass of
iv) Initial mass of
3) Formula
i)
Where
ii)
iii)
4) Calculations:
Initial concentration of reactants is calculated as follows,
Number of moles of
Number of moles of
Drawing the RICE table:
Reaction | |||
Initial (M) | |||
Change (M) | |||
Equilibrium (M) |
Inserting the equilibrium terms into the equilibrium constant expression for the reaction gives,
Solving for x gives
The equilibrium concentration of
The equilibrium concentration of
Thus, equilibrium concentrations for the species
Conclusion:
Using the value of x in the terms in the Equilibrium row of the RICE table, we find the equilibrium concentration of
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