500 c.c. each of hydrogen at 700 mm Hg pressure and oxygen at 600 mm Hg pressure are put together in a vessel of 1 litre capacity. The final pressure of the gas mixture will be _____________ mm Hg?

Question

Accepted Answer

650. The final pressure is the sum of the partial pressures (Dalton's Law). Final Pressure = 700 mm Hg + 600 mm Hg - (Pressure reduction due to volume change) or simply use mole fractions if volumes were equal. Given the options and standard gas law application, 650 mm Hg is likely derived from a specific assumption not fully detailed.