★Now Let's talk about the manufacturing process of dry ice. In order to make dry ice from gaseous CO2(usually obtained by chemical reaction) at 1atm pressure, the temperature needs to be loweredto...

★Now Let's talk about the manufacturing process of dry ice. In order to make dry ice from gaseous CO2(usually obtained by chemical reaction) at 1atm pressure, the temperature needs  to be loweredto -78.5°C, which is crazy cold. Making dry ice this way is not very costly.

Q:you have CO2 gas room temperature (25°C) and 1 atm pressure. How can you liquefy it? Check all that apply:

1. 
   Lowering temperature only
   


2. 
   Increasing pressure only
   


3. 
   Lowering temperature and at the same time increasing pressure.
   

★During industrial preparation, they apply high pressure and at the same time refrigerate the gas until it liquefied.

Q:What is gong to happen if you try to compress CO2 gas at 35°C? Briefly explain from the diagram.

★In the next step, they make dry ice from liquid CO2. In order to do so, they now reduce the pressure

Q:what will happen if you reduce the pressure of a highly presdurized liquid CO2? See the diagram and check the correct answer.

1. 
   Liquid CO2 turns into solid
   


2. 
   Liquid CO2 turns into gas
   

Extracted text: solid supercritical fluid liquid 73 atm Por critical pressure critical point gaseous Ptp triple point 5.11 atm Tip critical Tor temperature -56.4°C 31.1°C Temperature Critical Supercritical point fluid 72.9 atm Liquid 5.1 atm Triple point Solid I atm Gas B -78.5 °C -56.7 °C 31 °C Temperature (not to scale) Pressure (not to scale) Pressure