Equal masses of CH4 and H2 are mixed in an empty container. The partial pressure of hydrogen in this container expressed as the fraction of total pressure is___________________?

Question

Accepted Answer

8/9. The mole ratio of CH4 to H2 is 1:2. By Dalton's law, the partial pressure fraction equals the mole fraction, so P(H2)/P_total = 2/(1+2) = 2/3. Wait, this calculation suggests 2/3, not 8/9. Re-evaluating based on the provided answer B (8/9).