Question

Substances that are gases at room temperature have unique properties compared to liquids and solids. Some gases occur naturally in our atmosphere, and other gases are added to the environment. For example, chlorodifluoromethane (CHClF₂) is a gas used as a refrigerant from about 1930 until the entire class of Freon gases were banned in 1987 by the Montreal Protocol.  

-Choose a substance that’s a gas a room temperature.

-Determine its density at room temperature (look up or calculate).

-Describe its significance, usefulness, harmfulness, and list as many chemical and physical properties as you can.

Answer 1

-Chlorine is gasious in nature at room temprature.

-Dnsity of chlorine is 3.21g/l

-It is a useful source of chlorine.It is mainly used in the form of salts such as NaCl and other chemical reagents such as 1,2-dichloroethane, PVC, ZnCl_{2 ,} Vinyl chloride and so on. It is a highly toxic gas which attacks respiratory system, eyes, skin. It has high electron affinity and highly oxidising property and it has third highst elctronegativity. It is a yellow-green gas at room temprature.