Question: White phosphorus P4, is normally a white waxy solid. The liquid has a vapor pressure of 400.0 mmHg at 51.0 C and 760.0 mm Hg

White phosphorus P4, is normally a white waxy solid. The liquid has a vapor pressure of 400.0 mmHg at 51.0 C and 760.0 mm Hg at 80.0 C. What is the heat of vaporization of this substance?

(R = 8.314 J/(K- mol) give 4 significant figures.

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