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Phosphine Gas Oxidizes Spontaneously on Exposure to Air, as Represented

Question 14

Multiple Choice

Phosphine gas oxidizes spontaneously on exposure to air, as represented by: 2 PH3(g) + 3 O2(g) → P2O3(s) + 3 H2O(g)
What volume of oxygen gas, at 720 torr and 37°C, would be consumed in the formation of 22.0 g of P2O3 by this process?


A) 16.1 L
B) 12.5 L
C) 11.2 L
D) 8.05 L
E) 1.92 L

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