The partial pressures of , and in a vessel are 38 cm of Hg, 190 torr and 0.5 atm, respectively. The total pressure of the mixture at the same temperature is [7]

Question

The partial pressures of $N_2$, $O_2$ and $CO_2$ in a vessel are 38 cm of Hg, 190 torr and 0.5 atm, respectively. The total pressure of the mixture at the same temperature is [7]

Prashant Kotian · Accepted Answer

Correct answer: D. Convert all partial pressures to atm: P() = 38 cm Hg = 380 mm Hg = 0.5 atm [7]. P() = 190 torr = 190 mm Hg = 190/760 = 0.25 atm [7]. P() = 0.5 atm [7]. Total pressure = 0.5 + 0.25 + 0.5 = 1.25 atm [7].

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