Sciencemadness Discussion Board
Not logged in [Login ]
Go To Bottom

Printable Version  
Author: Subject: HELP me homework for tommorow and im stuck
gerkin
Harmless
*




Posts: 4
Registered: 23-5-2005
Member Is Offline

Mood: bland

[*] posted on 10-12-2007 at 15:21
HELP me homework for tommorow and im stuck


CO+2H2<=> CH3OH

all are gases at 107 degrees,

They reach equilbrium at a pressure of 1.59mpa with 0.122 mol of CO present and 0.298 mol of Hydrogen present at Equilbrium in a vessel of 1.04dm3

Assuming ideal gas behavoiur determine the total number of moles and hence calculater the number of moles in the Equilbrium mixture,


Right so im assuming i have to find out the partial pressures of CO and h2 however im not sure how to do this! do i 1.59 * 0.122 for Co and then 1.59*0.298 for the h2 and then just do these to values - the total pressure to find the PP of CH3OH?

thanks in advance kinda urgent guys.
View user's profile View All Posts By User
bereal511
Hazard to Others
***




Posts: 162
Registered: 9-8-2005
Location: Madison, WI
Member Is Offline

Mood: No Mood

[*] posted on 10-12-2007 at 15:37


Find the total number of moles using PV = nRT, or rearranged, n = PV/RT. If you need to find moles of methanol, just subtract H2 moles and CO moles off the total. You have all the information there to just do a simple ideal gas law calculation, no need for the mole information of H2 and CO.



As an adolescent I aspired to lasting fame, I craved factual certainty, and I thirsted for a meaningful vision of human life -- so I became a scientist. This is like becoming an archbishop so you can meet girls.
-- Matt Cartmill
View user's profile View All Posts By User
gerkin
Harmless
*




Posts: 4
Registered: 23-5-2005
Member Is Offline

Mood: bland

[*] posted on 10-12-2007 at 16:52


thank you P= total pressure V = volume = N total no of moles R = 8.31 is it the constant and T = temp

i feel really stupid now lol
View user's profile View All Posts By User

  Go To Top