Homework Help: chem repost

Posted by sarah on Sunday, April 12, 2009 at 7:47pm.

a 2L container is charged with 2atm of O2 at 298 Kelvin.
Ch4(g) + 2O2(g) --> CO2(g) + 2H20(g)

calculate the partial pressure of methane needed to react completely with the O2 in the vessel. What is the total pressure after the reaction is complete if the temperature increased to 750 Celcius?
Responses

AP chem - DrBob222, Saturday, April 11, 2009 at 11:54pm
Use PV = nRT
You know P, V, R, and T, calculate n for oxygen.
That allows you to calculate CH4 moles and from there moles CO2 and moles H2O.
Then calculate total P from new conditions for PV = nRT.

NEW:

once I have calculated the number of moles, how do i calculate the partial pressure of methane needed to completely react with O2? is that the number of moles?

I have you need .0817 moles of methane but i don't know if this is the same as partial pressure

chem repost - DrBob222, Sunday, April 12, 2009 at 8:33pm
Answered below.

Answer this Question

Related Questions

AP chem - a 2L container is charged with 2atm of O2 at 298 Kelvin. Ch4(g) + 2O2(...
ap chem repost - a 2L container is charged with 2atm of O2 at 298 Kelvin. Ch4(g...
re-apchem post - a 2L container is charged with 2atm of O2 at 298 Kelvin. Ch4(g...
Chemistry - I am having such a hard time approaching this problem. It would be ...
Chemistry - I am having such a hard time approaching this problem. It would be ...
chem - The following reaction is used in some self-contained breathing devices ...
Chemistry - which conversion factor do you use to first calculate the number of ...
Chemsitry II - The partial pressure of CH4(g) is 0.185 atm and that of O2(g) is ...
Chemistry - CH4(g) + 2O2(g) = CO2(g) + 2H20(g). What volume of O2 is required to...
chemistry - A mixture of CH4(g) at 0.500 atm and O2(g) at 0.750 atm is present ...

For Further Reading

First Name:
School Subject:
Answer: