Calculating the partial pressure of H2 in 10 L flask ‌pH2‌ initial ‌‌‌VH2‌ initial ‌=pH2‌ final ‌‌‌V‌total ‌ ‌pH2‌ final ‌=‌
1×1
10
=0.1bar Using Boyle's law for partial pressure of O2 pO2‌ final ‌‌=‌
pO2‌ initial ‌×VO2‌ initial ‌
V‌total ‌
‌=‌
2×2
10
=0.4bar Use Dalton's law of partial pressure. p‌total ‌‌=pH‌ final ‌‌‌+pO2‌ final ‌ ‌=0.1+0.4=0.5bar
