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WAEC - Chemistry (2016 - No. 5)

The boiling points of HF, H2O and NH3 increase in the order of
NH3
H2O < HF
HF < NH3 < H2O
NH3 < HF < H2O

Vysvetlenie

Ammonia = -33.34°C;  Hydrogen fluoride = 19.5°C; Water = 100°C

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