AP Chemistry 1.5 Forming and Breaking Bonds
AP Chemistry 1.5 Forming and Breaking Bonds. What can we expect to see with regard to the current stage of this reaction?
|AP Chemistry||Breaking Bonds|
Forming and Breaking Bonds
|Test Prep||AP Chemistry|
to see with regard to the current stage of this reaction?
And here are the potential answers:
To solve this problem, we need to remember Le Châtelier's Principal. [Person photographing men on stage]
Thank you, 1860s French high school principal Monsieur Talbert.
We know Henri Louis Le Châtelier couldn’t have [Henri working in a lab]
developed his chemical equilibrium law without the nurturing school environment you helped
to create for him.
Now that that’s out of the way, we also need to remember Le Châtelier's Principle
of chemical equilibrium, it says that when a chemical system in dynamic equilibrium is [Teacher writing on the board]
perturbed by changing the conditions, the equilibrium changes to counteract the perturbation.
In our chemical reaction, if we remove all of the product D, then Le Châtelier's Principle [Product D removed from chemical reaction]
tells us that the reaction will adjust to counteract that change by creating more of
the product D.
This would correspond to the reaction proceeding from left to right. [Blue ball moves from left to the right]
It’s kind of like a clown car packed with clowns.
…Which…come to think of it, really can’t be safe. [Clowns enters small car and drives away]
If all the clowns in the back seat get out, some of the other clowns will move to the
back so the driver can see the road.
…Seriously, how have police not cracked down on this yet?
Here’s another way to think about it.
If our chemical reaction is at dynamic equilibrium, the rate of the forward reaction is exactly
the same as the rate of the reverse reaction. [D reactants in the woods covered in barbed wire]
If all of species D were removed, the forward reaction could still proceed at the same rate,
but the backward reaction could not take place at all since there would be no D available
As a result, the overall net reaction would proceed from left to right.
So, we can see that the reaction will move from left to right.
Another way to say the same thing is that the equilibrium will shift to the right.
This just happens to be answer choice (A), which is the right answer. [Answer A circled green]
And now if you'd excuse us, we have a few citizens' arrests to make. [Police arresting man riding scooter]
Keeping the roads safe, one clown car at a time.