F325 How Far? Model Answers for Kc
- Created by: CatherineMcGurk
- Created on: 10-08-15 19:56
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Model Answers for Kc
Changes in Concentration
General Principle
If the ratio of [PRODUCTS] / [REACTANTS] is less than Kc, then [PRODUCTS] must increase and [REACTANTS] must decrease until Kc is restored.
If the ratio of [PRODUCTS] / [REACTANTS] is more than Kc, then [PRODUCTS] must decrease and [REACTANTS] must increase until Kc is restored.
Model Answers:
When Kc = [PRODUCTS] / [REACTANTS]
1. If the [PRODUCT] increases...
- The value of Kc is unaffected by changes in concentration and remains unchanged at a constatnt temperature.
- The system is no longer in equilibruim.
- [PRODUCTS] must decrease and [REACTANTS] must increase until Kc is restored.
2. If the [PRODUCT] decreases...
- The value of Kc is unaffected by changes in concentration and remains unchanged at a constant temperature.
- The system is no longer in equilibrium.
- [PRODUCTS] must increase and [REACTANTS] msut decrease until Kc is restored.
3. If the [REACTANTS] increases...
- The value of Kc is unaffected by changes in concentration and remains unchanged at a constant temperature.
- The system is no longer in equilibrium.
- [PRODUCTS] must increase and [REACTANTS] must decrease until Kc is restored.
4. If the [REACTANTS] decreases...
- The value of Kc is unaffected by changes…
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