Use LeChâtelier's principle to predict whether each the following changes causes the system to shift in the direction of products or reactants:
Drag the appropriate items to their respective bins.
HC2H302 (aq) + H20(l) <=>C2H302- (aq) + H30+ (ag)
removing some HC2H302 (aq)
removing some С2Н302- (aq)
adding more НС2Нз02 (aq)
adding more C2H302- (aq)
Removing some HC2H302 (aq) - Shifts towards products
Removing some C2H302- (aq) - Shifts towards reactants
Adding more HC2H302 (aq) - Shifts towards reactants
Adding more C2H302- (aq) - Shifts towards products
To predict whether each of the given changes causes the system to shift in the direction of products or reactants, you can use LeChâtelier's principle. This principle states that when a system at equilibrium is subjected to a change, it will adjust itself to minimize the effect of that change and restore equilibrium.
In the given reaction: HC2H302 (aq) + H20(l) <=> C2H302- (aq) + H30+ (ag)
1. Removing some HC2H302 (aq):
By removing some HC2H302 (acetic acid), the system will try to restore equilibrium by shifting the reaction in the direction that produces more acetic acid. This means the system will shift towards the reactant side. Thus, the system will shift in the direction of reactants.
2. Removing some С2Н302- (aq):
By removing some С2Н302- (acetate ion), the system will try to restore equilibrium by shifting the reaction in the direction that produces more acetate ion. This means the system will shift towards the product side. Thus, the system will shift in the direction of products.
3. Adding more НС2Нз02 (aq):
By adding more HC2H302 (acetic acid), the system will try to restore equilibrium by shifting the reaction in the direction that consumes more acetic acid. This means the system will shift towards the product side. Thus, the system will shift in the direction of products.
4. Adding more C2H302- (aq):
By adding more C2H302- (acetate ion), the system will try to restore equilibrium by shifting the reaction in the direction that consumes more acetate ion. This means the system will shift towards the reactant side. Thus, the system will shift in the direction of reactants.
Remember, LeChâtelier's principle helps us predict the direction of the shift when a system is subjected to changes.
LeChâtelier's principle states that if a system at equilibrium is subjected to a change in concentration, temperature, or pressure, the system will shift in order to counteract the change and restore equilibrium. Let's use this principle to predict the effect of each change on the given system:
1. Removing some HC2H302 (aq):
- The concentration of HC2H302 (aq) is decreased.
- According to LeChâtelier's principle, the system will shift to counteract the change.
- The system will shift in the direction of products to restore equilibrium.
- Therefore, the system will shift towards C2H302- (aq) and H30+ (aq), favoring the formation of products.
2. Removing some С2Н302- (aq):
- The concentration of С2Н302- (aq) is decreased.
- According to LeChâtelier's principle, the system will shift to counteract the change.
- The system will shift in the direction of reactants to restore equilibrium.
- Therefore, the system will shift towards HC2H302 (aq) and H20 (l), favoring the formation of reactants.
3. Adding more НС2Нз02 (aq):
- The concentration of HC2H302 (aq) is increased.
- According to LeChâtelier's principle, the system will shift to counteract the change.
- The system will shift in the direction of reactants to restore equilibrium.
- Therefore, the system will shift towards HC2H302 (aq) and H20 (l), favoring the formation of reactants.
4. Adding more C2H302- (aq):
- The concentration of C2H302- (aq) is increased.
- According to LeChâtelier's principle, the system will shift to counteract the change.
- The system will shift in the direction of products to restore equilibrium.
- Therefore, the system will shift towards C2H302- (aq) and H30+ (aq), favoring the formation of products.