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12 Cards in this Set

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  • Back
why are molecules like CFCL3 not broken down in the troposhere
bc their bonds are too strong to be broken down by the little energy present in the troposphere
how do molecules such as CFCL3 contribute to ozone depletion
their bonds get broken down by UV light in the stratosphere.Cl radicals are formed.these catalyse the depletion of ozone.
importance of ozone in stratosphere to humans
it stops/prevents/filters
high energy
UV radiation from reaching us
which would otherwise cause skin cancer or damage to DNA or affect crops of cause eye zibs
why dont reactions(like the action on sunlight on water molecules) in the troposhere produce OH radicals
because the energy here isnt enough
or
bc the frequency of UV isnt enough to break the bonds
agricultural activities that act as a source of methane
growing rice
livestock farming
making silage
xplain how increasing conc of methane is linked to global warming
increases the amount of infrared abaorbed.this makes the bonds of the molecules vibrate more.this energy is transfered into Ek which warms up the earth.a
how does infrared spectroscopy produce a spec for a compound
the bonds absorb infrared radiation
which causes their bonds to vibrate more
how would an infrared spectrum confirm the presence of only C and H in the product
-by showing peaks where absorption
-no peaks shown for bonds involving atoms other than C and H
whats an initiation reaction?
where one electron moves
reagents and conditions for the reaction between a ketone with water (dehydration reaction)
conc sulfuric acid
why will molecules in a compound have partial charges
if they are more electronegative than the central atom
there will be a p.d-p.d in a molecule if...
-it is polar
-if the atoms have different polarities which wouldnt cancel out.