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26 Cards in this Set
- Front
- Back
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Foward Reaction? |
Reactants forming products |
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Reverse Reaction? |
Products forming reactants |
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Equilibrium state? |
A state in which forward and reverse reactions are balanced with the same rate (Keq)
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Types of Stress? |
Change in concentration, temperature, pressure and volume. |
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What happens when you add a catalyst or another random substance? |
No effect on equilibrium |
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Adding reactants causes a shift to? |
The right |
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Adding products causes a shift to? |
The left |
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Taking away reactants causes a shift to? |
The left |
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Taking away products causes a shift to? |
The right |
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Increasing pressure causes a shift to? |
Shift towards side with fewer moles of gas |
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Decreasing pressure causes a shift to? |
Shift towards the side with more moles of gas |
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Increase in volume (decrease in pressure) causes a shift to? |
Shift to the side with more moles of gas |
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Decrease in volume (increase in pressure) causes a shift to? |
shift to the side with fewer moles of gas |
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If heat is added (endothermic) there is a shift to? |
The left |
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If heat is taken away (exothermic) there is a shift to? |
The right |
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If delta H is greater than 0 heat is? |
absorbed (endothermic) |
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If delta H is less than 0 heat is? |
Released (exothermic) |
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Le Chatelier's principle states that? |
When stress is put on a system at equilibrium, the system shifts left or right to correct itself. |
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Only stress that changes the equilibrium constant? |
Temperature |
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If Q is less than K the shift will go? (picture a number line) |
Right |
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If Q is bigger than K, the shift will go? (picture a number line) |
Left |
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If Q is equal to K? |
The system is at equilibrium |
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How do you calculate concentration? |
C = n/v |
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What happens to Keq when you increase the temperature? |
Keq decreases |
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What happens to Keq when you decrease the temperature? |
Keq increases |
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Does change in concentration, volume, or pressure effect Keq? |
No |
