Chlorofluorocarbons (CFCs) and Ozone

HSC Chemistry- Task 1 OPEN-ENDED INVESTIGATION Chlorofluorocarbons (chlorofluorocarbons) and Ozone recognise the origins of chlorofluorocarbons and halogens in the atmosphere Discuss the problems associated with the used of chlorofluorocarbons and access the dominance of steps taken to improve these problems. Present information identifying ersatz chemicals used to replace chlorofluorocarbons and evaluate their specialty of their use as a replacement for chlorofluorocarbons. decompose available information that indicates changes in atmospheric ozone concentrations, describe the changes detect and explain how this information was obtained. Identify the origins of CFCs and halons in the atmosphere Chlorofluorocarbons (CFCs) argon a man do compound that was invented in the 1930s by Thomas Midgly and his assistant. They were invented for an pick to dangerous substances exchangeable ammonia, which is a highly flammable and a toxic splatter used as a cold and as a spray can propellant. At this meter CFCs were believed to be safer and had more appealing properties. organism non-toxic, non-flammable, non-explosive, insoluble, and chemically un-reactive, resulted in CFCs becoming prevalent and therefore extensively used.

As CFCs are so impersonal and have low boiling points they were also used wide as solvents, propellants and blowing agents in foams. Due to the broad amount of CFCs used, leakages in spray cans, refrigerants as well as general use, the CFC gases were released into the atmosphere. As CFCs were so inert they did not react in the troposphere and grad ually do their way to the stratosphere. Thi! s is where the ultraviolet energy uncaring the C-Cl bonds and as a result Cl free radicals were form which reacted with ozone under UV light and thus destroying he ozone layer. When the chlorine atoms reach the stratosphere they tolerate photodissociation. The chlorine radicals rapidly attack ozone molecules and stimulate ClO. CH3Cl → CH3 + Cl Cl + O3 → ClO + O2...If you want to get a full essay, ramble it on our website: BestEssayCheap.com

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