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A.Calculate ΔS°(universe) for the decomposition of 1 mol of gaseous phosphine (PH3) to form white phosphorus...

A.Calculate ΔS°(universe) for the decomposition of 1 mol of gaseous phosphine (PH3) to form white phosphorus and gaseous

S° (J/K · mol .) . ΔfH° (kJ/mol)

O2(g) 205.07 0
H2(g) 130.7 0
H2O(ℓ) 69.95    -285.83
P4(s, white) 41.1 0

PH3(g)210.24 5.47

N2(g)191.56 0

NH3(g)192.77 -45.90

Cl2(g)223.08 0

HCl(g)186.2 -92.31

CO2(g)213.74 -393.509

C(s, graphite)0 5.6

ΔS°(universe) = J/K

B.Determine whether the decomposition of gaseous phosphine (PH3) to form white phosphorus and gaseous hydrogen is spontaneous at 25 °C.

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