Ammonia liquid boils at and freezes at at atmospheric pressure.

CHEMISTRY · Multi-part · CBSE · Chemistry · Matter in Our Surroundings · Matter in Our Surroundings

Problem

Ammonia liquid boils at

-33\text{ }^\circ\text{C}

and freezes at

-78\text{ }^\circ\text{C}

at atmospheric pressure. (1) a Predict the state of ammonia at i

-50\text{ }^\circ\text{C}

-80\text{ }^\circ\text{C}

iii 200 K. (2) - b Sketch a graph of temperature against time as a sample of ammonia is cooled from 0 °C to –50 °C.