Logged out
Access All our Essays in an Instant
Swap your work for FREE access, or pay £4.99 for instant access
Determining the Enthalpy Change of A Reaction.
Member rating:
(4 votes)
| Words:
| Submitted: Wed Aug 27 2003
Page Preview
On the left is an image preview of every page of this document, and below are the first 150 words with formatting removed:
Practical Three - 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. My results were as follows: Mass of CaCO3 + weighing bottle 2.55g Mass of empty weighing bottle .30g Mass of CaCO3 used 2.25g Temperature of acid initially 20oc Temperature of solution after mixing 24oc Temperature change during reaction 4oc Mass of CaO + weighing bottle 1.5g Mass of empty weighing bottle .30g Mass of CaO used 1.20g Temperature of acid initially 21oc Temperature of solution after mixing 30oc Temperature change during reaction 9oc With these values I calculated the enthalpy change for the reaction: CaCO3 CaO + CO2 CaCl2 ?H1 - ?H2 = ?H3 Energy= mass of x Specific...
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
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
