Given that the normal freezing point of ammonia is -78°C. Predict the signs of ΔH, ΔS and ΔG for ammonia when it freezes at -80°C and 1 atm.
NH3(l) → NH3(s)
ΔH ΔS ΔG
A. + - +
B. - - -
C. - - 0
D. - + -
E. + + 0
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