November 25, 2024, 02:34:39 PM
Forum Rules: Read This Before Posting


« previous next »
Pages: [1]   Go Down

Topic: Change in enthalpy.  (Read 3933 times)

0 Members and 1 Guest are viewing this topic.

skeemask

  • Guest
Change in enthalpy.
« on: November 10, 2005, 07:47:05 PM »
I need some help on this problem. I don't know how to start.

Consider the following reaction:
CH4(g) + 2O2(g) ---> CO2(g) + 2H2O (l)          
delta H = -891 kJ

Calculate the enthalpy change in this case:

1.00 x 103  L methane gas at 740 torr. and 25o C is burned in excess oxygen.  
Logged

Offline mike

  • Retired Staff
  • Sr. Member
  • *
  • Posts: 1245
  • Mole Snacks: +121/-35
  • Gender: Male
Re:Change in enthalpy.
« Reply #1 on: November 10, 2005, 08:01:08 PM »
PV = nRT to find out number of moles of gas.

Each mole of gas produces -891kJ
Logged
There is no science without fancy, and no art without facts.

skeemask

  • Guest
Re:Change in enthalpy.
« Reply #2 on: November 10, 2005, 09:13:04 PM »
-3.55x10-4 kJ. it's right, thanks
Logged
Pages: [1]   Go Up
« previous next »
Sponsored Links