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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?

1 answer

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.
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