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WAEC - Chemistry (2016 - No. 5)
The boiling points of HF, H2O and NH3 increase in the order of
NH
3
H
2
O < HF
HF < NH
3
< H
2
O
NH
3
< HF < H
2
O
Maelezo
Ammonia = -33.34°C; Hydrogen fluoride = 19.5°C; Water = 100°C
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