November 28, 2021, 03:01:35 PM
Forum Rules: Read This Before Posting


Topic: enthalpy of combustion  (Read 11511 times)

0 Members and 1 Guest are viewing this topic.

canadiankarma

  • Guest
enthalpy of combustion
« on: May 04, 2005, 11:44:55 PM »
If delta H for the equation for the combustion of magnesium, is -1200kJ/mol, what is the enthalpy of combustion of magnesium?

----Would it be -600kJ/mol since 2 moles of magnesium reacts with 1 mole of oxygen (from the chemical equation)

Garneck

  • Guest
Re:enthalpy of combustion
« Reply #1 on: May 05, 2005, 02:17:00 AM »
If delta H for the equation for the combustion of magnesium, is -1200kJ/mol, what is the enthalpy of combustion of magnesium?

That question is all wrong.

If dH for 2Mg + O2 ---> 2MgO is equal -1200kJ/mol, then yes, the enthalpy of magnesium combustion is -600 kJ/mol for this reaction:

Mg + 1/2 O2 ---> MgO

Sponsored Links