For dry cleaning, in the place of tetrachloroethane, liquefied carbon dioxide with suitable detergent is an alternative solvent. What type of harm to the environment will be prevented by stopping use of tetrachloroethane ? Will use of liquified carbon dioxide with detergent be completely safe from the point of view of pollution? Explain.

For dry cleaning, in the place of tetrachloroethane, liquefied carbon

1.	For dry cleaning, in the place of tetrachloroethane, liquefied carbon dioxide with suitable detergent is an alternative solvent. What type of harm to the environment will be prevented by stopping use of tetrachloroethane ? Will use of liquified carbon dioxide with detergent be completely safe from the point of view of pollution? Explain.
Answer» Solution :Tetrachloroethane, `Cl_2CH - CHI_2` is suspected to be carcinogenic and it contaminates the ground WATER. It we use liquified `CO_2` ALONG with SUITABLE detergent. this harmful effect will be prevented. Use of liquifed `CO_2` along with detergent will not be completely safe because most of the detergents are non-biodegradable and they cause water pollution. Moreover, liquified `CO_2` will ultimately ENTER into the atmosphere and contributed to the green house effect.