[jegues]

1. The problem statement, all variables and given/known data

Ethylene oxide is produced industrially from the reaction of ethylene with oxygen at atmospheric pressure and 283 oC, in the presence of silver catalyst.

C₂H₄ + O₂---> C₂H₄ O

Assuming 100 % yield, how many kg of ethylene oxide can be produced from 35100 L of a mixture containing ethylene and oxygen in 1:1 molar ratio?

The attempt at a solution

First I balanced the equation like so,

2 C₂H₄ + O₂---> 2C₂H₄ O

I then converted the temp. from celsius to kelvin so,

525.15K

I'm not sure what value I should use for pressure, in a question like this am I just assuming that P = 1atm?

I then applied PV= nRT and solved for moles. Once I have the number of moles I used the molar mass to get it into grams and then I converted grams to kilograms.

I still got the answer wrong however.

What am I doing wrong?

Also, what value for the gas constant do I use that will work with the units K, mol, atm, and L? 

[Mr Lead]

Hi!
1-Balance is correct..but I'd convert better  temperature from °C to K. The equation to convert is: K=°C+273,15
2-Use 1 atm is correct
3-R constant: 0.082 atm*dm³*mol^-1*K^-1