what is the name of the gas which forms dry ice ...........u can also send the lab. preparation of it
http://dryiceinfo.com/
CO2
The gas that forms dry ice is carbon dioxide (CO2). Dry ice is solidified carbon dioxide, which results from the process of sublimation. During sublimation, carbon dioxide transitions directly from a solid to a gas without passing through the liquid phase.
To prepare dry ice in a lab, here's one common method:
1. Start with a high-pressure carbon dioxide gas cylinder.
2. Connect a siphon tube to the gas cylinder's outlet valve.
3. Place the other end of the siphon tube inside a container filled with liquid acetone or ethanol. Make sure the container is resistant to low temperatures.
4. Open the valve on the gas cylinder, allowing the carbon dioxide gas to flow.
5. As the gas escapes from the cylinder and enters the container of liquid acetone or ethanol, it rapidly cools and solidifies into dry ice flakes or blocks.
6. Use appropriate safety precautions, such as gloves, goggles, and proper ventilation, when handling dry ice due to its extremely low temperature (-78.5 °C or -109.3 °F).
Note: It's essential to handle dry ice with care, as it can cause severe frostbite if it comes into direct contact with the skin, and it should never be stored in an airtight container or closed spaces, as it can produce high-pressure gas.