100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
Previously searched by you
Previously searched by you
logo
Summary EDEXCEL A LEVEL CHEMISTRY UNIT 13 ENERGETICS II NOTES £4.59
Add to cart
Quickly navigate to
Preview
  2.  
  3. PEARSON (PEARSON)
  4.  
  5. Chemistry 2015
  6.  
  7. Unit 13 - Energetics II

Summary

Summary EDEXCEL A LEVEL CHEMISTRY UNIT 13 ENERGETICS II NOTES
 3 views  0 purchase

I created these notes throughout y12&13 and used them for my A level 2022 exams. I got a grade 9 in GCSE and an A* at a level. These notes were made using the CGP revision guide, edexcel textbook and class notes in order to cover everything in the course. I have also added markschemes from past pap...

[Show more]

Preview 2 out of 8  pages

Document information

  • August 24, 2022
  • 8
  • 2021/2022
  • Summary

Subjects

Written for

All documents for this subject (11)

Seller

avatar-seller
rajreuben

Content preview

13.1.1 IONIC BONDING & STRUCTURES
29 September 2021
19:57
Lattice - Regular 3D arrangement of atoms or ions in a crystal.
Ionic bonding - Electrostatic force of attraction between oppositely charged ions in a
lattice.




13.1.2 ENERGY CHANGES & IONIC BONDING
29 September 2021
20:07
Standard enthalpy change of formation, ΔfH* - Enthalpy change when 1 mole of a
substance is formed from its constituent elements in standard states under standard
conditions.

, 13.1.3 ENTHALPY CHANGES WHEN IONS
FORM
29 September 2021
20:12
Standard enthalpy change of atomisation, ΔatH
 Enthalpy change when 1 mole of gaseous atoms are formed from the element
in its standard state, under standard conditions.




1st electron affinity, Δe1H
 Enthalpy change when 1 mole of gaseous atoms gain 1 mole of electrons to
form 1 mole of 1- gaseous ions, under standard conditions.
Adding first electron is exothermic for non-metals, but others are endothermic.
 Electrostatic force of attraction to gain electron.
 After first electron, becomes negatively charged, and so repels 2nd electron.




Ionic lattices are held together by a net force of oppositely charged ions.
When gaseous ions combine to form a lattice, energy is released.
Standard lattice energy, ΔleH*
 Enthalpy change when 1 mole of an ionic substance is formed from its
constituent gaseous ions, under standard conditions.
Lattice energy is negative as forming lattice is exothermic.
 The more negative, the stronger the ionic lattice.
If ions have smaller radii and have larger charges, higher charge density and can also
pack closer together if smaller.
 Stronger electrostatic forces between ions, resulting in a more exothermic
lattice enthalpy.

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 credit card 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 these notes from?

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

Will I be stuck with a subscription?

No, you only buy these notes for £4.59. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

56326 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

Start selling
£4.59
  • (0)
Add to cart
Added