Your Status: Logged out Log in

Determining the Enthalpy Change of A Reaction.  

Member rating: 10 out of 10 stars (1 vote) | Words: | Submitted: Thu Nov 27 2003

Page Preview
Preview
Previous 1 of 6 Next

On the left is an image preview of every page of this document, and below are the first 150 words with formatting removed:

AS CHEMISTRY 2813/2 Coursework Kamela Aliaj Determining the Enthalpy Change of A Reaction. If Calcium Carbonate, CaCO3, is heated it decomposes into Calcium Oxide, CaO and Carbon Dioxide, CO2. CaCO3 CaO + CO2 The aim of this experiment is to determine the enthalpy change of this reaction. To do this I will react both Calcium Carbonate and Calcium Oxide, separately, with 2mol dm-3 Hydrochloric Acid, HCl. By recording the temperature changes in each reaction, and using Hess's Cycle, I will be able to work out the enthalpy change. Hess' Law States: "The enthalpy change for any chemical reaction is independent of the intermediate stages, provided the initial and final conditions are the same for each route." CaCO3 CaO + CO2 CaCl2 + CO2 + H2O In simpler terms, the main point of Hess' Law is that the total enthalpy change for the indirect route of a reaction is the same as the direct route, i.e. ?H1 =...

Get instant access



  • Instant, unlimited access to our documents in full
  • Swap your work for free access, or pay £4.99
  • To see the full version of this document and 145,970 others
Register Now
OR

Receive email updates for this category



  • Simply tell us your email address and receive a weekly Study Help Email for FREE
  • Receive 3 FREE essay views with each email
  • Get all the latest essays from Coursework.Info & discussion from TheStudentRoom.co.uk