Dichloromethane yog ntau yam kev lag luam hnyav. Tus kws tshawb fawb Belgian Frédéric Swarts pioneer lub synthesis ntawm CFCs nyob rau hauv 1890s.
CFCs ua li cas?
CFCs thiab HCFCs feem ntau yog tsim los ntawm kev sib pauv halogen pib los ntawm chlorinated methanes thiab ethanesCov derivatives brominated yog tsim los ntawm cov tshuaj dawb-radical ntawm chlorofluorocarbons, hloov C-H daim ntawv cog lus nrog C- Br daim ntawv cog lus. Feem ntau CFCs yog cov molecules me uas tsuas muaj ib lossis ob lub atoms xwb.
chlorofluorocarbons siv dab tsi?
Chlorofluorocarbons (CFCs) yog cov tshuaj tsis muaj tshuaj lom, tsis muaj hluav taws xob muaj cov tshuaj atoms ntawm carbon, chlorine, thiab fluorine. Lawv tau siv rau hauv tsim cov tshuaj aerosol, tshuab cov neeg ua npuas ncauj thiab cov khoom ntim, ua kuab tshuaj, thiab ua cov tub yees.
Cov tshuaj formula ntawm chlorofluorocarbon yog dab tsi?
Yog li cov tshuaj formula rau CFC-11 yog CFCl3. Ntawd yog, nws muaj 1 carbon atom, tsis muaj hydrogen, 1 fluorine atom, thiab 3 chlorine atoms.
Qhov twg yog lub hauv paus ntawm chlorofluorocarbons?
Qhov feem ntau ntawm CFCs yog tub yees, tab sis cov hluav taws tua hluav taws rau lub dav hlau thiab aerosols kuj emit CFCs rau hauv qhov chaw.
