how we can cool NH3 vapour into NH3 liqid if NH3 boils at -33.34 °C,Melting point−77

[muna]

NH3 boils at -33.34 °C (-28.012 °F) at a pressure of 1 atmosphere

Melting point
−77.73 °C, 195 K, -108 °F

Boiling point
−33.34 °C, 240 K, -28 °F
the liquid boils at −33.3 °C, and freezes at −77.7 °C to white crystals

can you pl help me to know how ammonia vapor cools to liquid in the condenser, whether 28 degree Celsius of water cools ammonia vapor into liquid? i thought that we want cool down ammonia -33.34 ...
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[Brian_UK]

Try looking at your figures at different pressures.

[muna]

thank you so much