Problem: The standard heat of formation of PI3 (s) is -24.7 kJ/mol and the PI bond energy in this molecule is 184 kJ/mol. The standard heat of formation of P(g) is 334 kJ/mol and that of I2 (g) is 62 kJ/mol. The I2 bond energy is 151 kJ/mol.Calculate the heat of sublimation of PI3 [PI3(s) → P3(g)].

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The standard heat of formation of PI3 (s) is -24.7 kJ/mol and the PI bond energy in this molecule is 184 kJ/mol. The standard heat of formation of P(g) is 334 kJ/mol and that of I2 (g) is 62 kJ/mol. The I2 bond energy is 151 kJ/mol.

Calculate the heat of sublimation of PI3 [PI3(s) → P3(g)].

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