Summary
Chemical Equilibria, Le Chatelier's Principle and K summary notes for a level chemistry
- Institution
- AQA
summary notes for aqa's a level chemistry Chemical Equilibria, Le Chatelier's Principle and K
[Show more]
Seller
Follow
Content preview
Equilibria, Equilibria
Not all reactions occur in one direction, some are reversible.
Reversible reactions:
• Reversible reactions can only occur within a closed system, often a sealed vessel being
used to suggest this.
• Reversible reactions will react dynamic equilibrium, which is where the forward and
backwards reactions occur at equal rates. There will appear to be no change in the
equilibrium mixture because as the reactants react the products react and there appears to
be no change.
Conditions for equilibrium
• Can only be reached in a closed system
• Equilibrium can be approached from either direction and the final equilibrium position
will be the same
• It is a dynamic process: the forward reaction rate = backward reaction rate
• It takes time to reach equilibrium
• They show no macroscopic evidence of change
• At equilibrium the concentrations are not necessarily equal but the substances may remain
constant
↑ ·
Dynamic equilibrium is not archived
instantly, it takes time!
Concentration and dynamic equilibrium
When equilibrium is reached,
the concentration of the
reactants and products need to
be constant (they do NOT need
to be equal
Showing how dynamic equilibrium position lies
ad 2NO2 2 4
Here the equilibrium lies on the lefthand side NO2
due to being at concentration than N2O,
it a
higher
t
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller tedcav. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for £7.49. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
76658 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy revision notes and other study material for 14 years now
