Suggest how carbon dioxide gas can be changed to liquid carbon dioxide without reducing its temperature.
Answers
Answer:
Under certain conditions, some solids turn straight into a gas when heated. This process is called sublimation. ... At atmospheric pressure, it turns straight into gaseous carbon dioxide. Liquid carbon dioxide can only exist under high pressure, such as in fire extinguishers.
Answer:
CO2 tanks would, of course, contains liquid CO2 which only requires a suitable pressure as a prerequisite. At standard atmospheric pressure, CO2 can commonly only be solid or gas and that is all because of a certain process known as sublimation.
Explanation:
If the CO2 is highly concentrated, it is quite simple to convert it to a liquid. But, however, it only requires a decent compressor. Pumping the CO2 gas into a tiny tank filled with ice water should suffice. Pre-evacuating the CO2 tank would aid in the removal of non-condensible air. Under these conditions, CO2 will condense and liquefy. The compressor will heat the gas, and the ice water will be required to remove this heat as well as the heat of condensation. You can't keep going if you run out of ice, and you can't pump CO2 faster than you can remove heat.
Whereas, Making solid CO2 is far more difficult and requires much more cooling. A small solid can be created by releasing a significant amount of liquid CO2 into the air (as from a fire extinguisher). The subsequent quick evaporation further cools the liquid, and some of it solidifies into a sort of snow.