Reaction Quotient Worksheet - AnswerKey
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- What is Q, the reaction quotient?
It is a value that indicates the direction a reaction will shift in order to achieve equilibrium.
- What is the expression for Q?
Q = [C]c[D]d
[A]a[B]b
- What is the difference between Q and K?
Only equilibrium concentrations or partial pressures may be plugged into the expression for K. The concentrations or partial pressures from any point of the reaction may be plugged into the expression for Q.
- How is Q helpful?
When compared to K, Q can indicate the direction a reaction will shift in order to reach equilibrium.
- Consider:
A + B
C + D K = 10
If [A] = 2M, [B] = 4M, [C] = 1M and [D] = 8M, in what direction will a reaction shift to reach equilibrium?
Right.