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