Question

A mixture og gases has a total pressure off 28.3 atm, it is made of: 5.8 atm of hydrogen gas, 7.2 atm of nitrogen gas, 3.5 atm of oxygen gas and some amount of methane. What is the pressure of methane? what is the pressure of methane in kPa?

Answer 1

Ptotal = pH2 + pN2 + pO2 + pCH4.
Substitute and solve for pCH4 in atm and convert to kPa.