Question

WHY SOLID CO2 IS KNOWN AS DRY ICE?

Answer 1

solid co2 is called dry ice because it changes into gaseous state directly on decrease in pressure

Answer 2

ANSWER :-

If carbon dioxide is cooled under high pressure, it can be directly converted

into solid carbon dioxide called dry ice. If the pressure on dry ice is decreased

to one atmosphere, it sublimes i.e. it directly gets converted into the gaseous

state (i.e. carbon dioxide gas) without passing through the intervening liquid

state. As a result, unlike ordinary ice, dry ice does not wet the surface on

which it is kept. It is because of this reason that solid carbon dioxide is called

dry ice. It is used as a refrigerant under the name dricold.