Question
2NO(g) + O2(g) = 2NO2
If there are .02 moles of O2, .04 moles of NO, and .96 moles of 2NO2, calculate Kp if the total pressure is .2 atm.
If there are .02 moles of O2, .04 moles of NO, and .96 moles of 2NO2, calculate Kp if the total pressure is .2 atm.
Answers
drwls
The partial pressures are:
(0.02/1.02) * 0.2 = 0.00392 atm O2
(0.04/1.02) * 0.2 = 0.00784 atm NO
(0.96/1.02) * 0.2 = 0.1882 atm NO2
Now calculate the appropriate Kp value.
Kp = PCO2^2/[PNO^2*PO2]
This assumes that mixture is in chemical equlibrium. This is not always the case.
(0.02/1.02) * 0.2 = 0.00392 atm O2
(0.04/1.02) * 0.2 = 0.00784 atm NO
(0.96/1.02) * 0.2 = 0.1882 atm NO2
Now calculate the appropriate Kp value.
Kp = PCO2^2/[PNO^2*PO2]
This assumes that mixture is in chemical equlibrium. This is not always the case.