Logged out
Access All our Essays in an Instant
Swap your work for FREE access, or pay £4.99 for instant access
Determining the change in enthalpy for the combustion of Mg using solution calorimetry and heat summation.
Member rating: No Rating | Words: | Submitted: Tue Jun 20 2006
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:
Student Name Period 1 C.P. Chem March 7,2003 Determining the change in enthalpy for the combustion of Mg using solution calorimetry and heat summation. Abstract Hess's law of heat summation states that the value of ?H for a reaction is the same whether it occurs directly or as a series of steps. This principle was used to determine the change in enthalpy for a highly exothermic reaction, the combustion of magnesium metal. Enthalpy changes for the reactions of Mg in HCl (aq) and MgO (s) in HCl (aq) were determined experimentally, then added to that for the combustion of hydrogen gas to arrive at a value of -587 kJ/mol Mg. Compared with the accepted value of -601.8 kJ/mol Mg, our experimental error was 2.46%. Introduction In this investigation the change in enthalpy will be determined from the following equation: 2Mg + O2 ? 2MgO, but in an indirect manner. Magnesium metal burns with a bright extremely...
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 147,309 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
