无机化学题一道……

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无机化学题一道……
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无机化学题一道……
无机化学题一道……
 

无机化学题一道……
I2(s) ⇋ I2(g)
Kθ = p(I2,g)/pθ
△fGθm(I2,g) = △rGθm = -RTlnKθ
= -8.314 × 10^-3 × 298 × ln(0.041/100) = 19.3 kJ·mol-1
H2O(l) ⇋ H2O(g)
△fGθm -237.129 -228.572
△rGθm = △fGθm[H2O(g)] - △fGθm[H2O(l)]
= -228.572 + 237.129 = 8.557 kJ·mol-1
lnKθ = -△rGθm / RT = -8.557 / 8.314 × 10^-3 × 298 = -3.454
Kθ = 0.032
Kθ = p(H2O,g)/pθ
p(H2O,g) = Kθ·pθ = 0.032 × 100 = 3.2kPa