A Level Edexcel Chemistry - Topic 13 - Energetics 2/II
13 views 0 purchase
Course
Unit 13 - Energetics II
Institution
PEARSON (PEARSON)
A Level Edexcel Chemistry - Topic 13 - Energetics 2/II
Fully updated notes providing drop down answers to self made questions designed from numerous textbooks and exam mark schemes.
During my revision, I created these drop down questions and answers by extracting the key information needed to...
🕹
Topic 13 - Energetics 2
Lattice Energy
Define the starndard lattice energy
is the energy change when 1 mole of an ionic solid is formed from its
gaseous ions under standard conditions
What is lattice energy the measure of?
its a measure of ionic bond strength
the more negative the lattice energy, the stronger the bonding
Describe the factors affecting lattice energy
the higher the charge on the ions, the more energy is released when an
ionic lattice forms, this is due to stronger electrostatic forces between ions
more energy released means the lattice energy will be more negative
so lattice energy for compounds with 2+ ions or 2- ions will be more
exothermic than those with 1+ or 1- ions
the smaller the ionic radii of the ions the more exothermic the lattice energy,
smaller ions have a higher charge density and their smaller ionic radii means
that the ions can sit closly together in the lattice, thereofore attractions between
ions are stonger
What is the enthalpy change of atomisation
the enthalpy change of atomisation is the enthalpy change when 1 mole of
gaseous atoms is formed from the element in its standard state
What is the first electron affinity
Topic 13 - Energetics 2 1
, the first electron affinity is the enthalpy change when 1 mole of electrons are
added to 1 mole of neutral gaseous atoms to form 1 mole of gaseous 1- ions
Draw a born haber cycle to calculate the lattice energy of NaCl
How would you calculate a value of lattice energy using the born harber cycle
above?
Draw a born haber cycle to calculate the lattice energy of MgCl2
Topic 13 - Energetics 2 2
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 or Stuvia-credit 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 gautamnemani. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $10.46. You're not tied to anything after your purchase.
