100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
Summary (CAIE) Cambridge A Level Chemistry (9701)- Chemical Equilibria R149,85   Add to cart

Summary

Summary (CAIE) Cambridge A Level Chemistry (9701)- Chemical Equilibria

 7 views  0 purchase
  • Course
  • Institution
  • Book

This document is a summary of Cambridge International AS and A Level Chemistry which explains in a concise, detailed and clear manner that provides a complete and thorough understanding of chemical equilibrium. Equipped with 15 questions that will not be found in class accompanied by step by step a...

[Show more]

Preview 3 out of 24  pages

  • No
  • Chemical equilibrium
  • December 17, 2022
  • 24
  • 2022/2023
  • Summary
avatar-seller
Cambridge International AS and A Level Chemistry (9701)
University of Indonesia CHEM 004
Summary & 15’s Chemical Equilibria Practice Exam Solutions




Chemical Equilibria

, Equilibrium Concept

IRREVERSIBLE REACTION REVERSIBLE REACTION

 An irreversible reaction is a reaction  A reversible reaction is a reaction
that takes place in the same that goes in both directions (back
direction or a reaction that cannot and forth). In this case the product
reversed. can react again to form reactants.

 CH4(g) + 2 O2(g) CO2(g) + 2 H2O(g)  N2(g) + 3 H2(g)  2 NH3(g)

 The reaction to the right is called
the forward reaction, the reaction
to the left is called the reverse
reaction
Equilibrium State
Concentration (M) Characteristic of equilibrium


 Equilibrium time is obtained
when the rate of the forward
reaction = the rate of the
reverse reaction
 Although in a state of
equilibrium the
concentrations of the
reactants and products
remain constant,
 The reaction continues at the
molecular level, so this
equilibrium is called a
Equilibrium Time
Dynamic Equilibrium.
 It requires a closed system

, Equilibrium Type

HOMOGENEOUS EQUILIBRIUM HETEROGENEOUS EQUILIBRIUM

 Homogeneous Equilibrium:  Heterogeneous Equilibrium:
Equilibrium in which all the Equilibrium consisting of two or
components are in one phase. more phases.

 N2(g) + 3 H2(g)  2 NH3(g)  CaCO3(s)  CaO(s) + CO2(g)


 CH3COOH(aq)  CH3COO-(aq) + H+(aq)  Ag2CrO4(s)  2 Ag+(aq) + CrO42-(aq)




Laws and Provisions of Equilibrium
The product of the equilibrium concentrations of a substance on the right
side divided by the product of the equilibrium concentrations of a substance
on the left side, each raised to the power of its reaction coefficient, has a
certain value at a certain temperature.

aA + bB  cC + dD

Concentration Equilibrium Pressure Equilibrium Constant
Constant (Kc) (Kp)




 Aqueous (aq) and gas (g)  gas (g)
 Solid (s) and liquid (l)  solid (s), liquid (l), aqueous
(aq)
Kp = Kc (RT)n The partial pressure of each gas is
proportional to the moles in the
R = ideal gas constant balanced state.
T = absolute temperature The total pressure of the gases is
the sum of the partial pressures
n = the number of product of all the gases
coefficients minus the number
of reactant coefficients

The benefits of buying summaries with Stuvia:

Guaranteed quality through customer reviews

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

Quick and easy check-out

You can quickly pay through EFT, credit card or Stuvia-credit for the summaries. There is no membership needed.

Focus on what matters

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 this summary from?

Stuvia is a marketplace, so you are not buying this document from us, but from seller tandhiwahyono. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy this summary for R149,85. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

67096 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy summaries for 14 years now

Start selling
R149,85
  • (0)
  Buy now