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32 Cards in this Set
- Front
- Back
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Catalyst in making high density polyethene |
Ziegler natta |
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Conditions for making HDPE |
Normal atm Temp is 60 Catalyst Ziegler natta |
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Conditions for making LDPE |
High pressure 1200atm 200 degrees Catalyst is traces of oxygen Exothermic so water is added to dissipate heat |
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What does branching do to LDPE |
Stops close packing So lover VDw forces Results in lower softening temp Quite flexible Stretches well Fairly low density |
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Uses of LDPE |
Plastic bags Sheeting Insulation |
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Due to no or little branching in chain what does that mean for HDPE |
Close packaging Strong VDW Higher softening temp Described as highly crystalline Higher density |
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Uses of LDPE |
Buckets Bottles |
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Uses of polypropene |
Synthetic carpets |
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Uses of PvC |
Window frames. Guttering. Rain gear |
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Polystyrene uses |
Insulating cups |
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What does non-biodegrade mean |
Cannot be broken down by micro-organisms |
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Monomer for polystyrene |
Back (Definition) |
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Monomers for PeT |
Back (Definition) |
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Monomers for nylon |
Back (Definition) |
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Uses for nylon |
Nylon tights. Sports clothing |
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What is a polymer |
A large molecule made of many smaller ones |
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Structure of glycine |
Back (Definition) |
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Structure of alanine |
Back (Definition) |
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Why does lysine have a high Mp |
Due to Zwitter ions and strong attractions between molecules |
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How do enzymes work? |
They have an active site. Lock and key mechanism Lowers activation energy |
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How many electrons are there in the delocalises Pi electron system in a benzene ring |
6 |
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What is the anti cancer drug (draw) |
Back (Definition) |
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What is reagent C |
NaNo2 |
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What does a low Rf value indicate |
It is more soluble in stationary phase than mobile phase |
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Formula for chrome alum |
K2SO4.Cr2(SO4)3.24H2O |
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Explain why it is nessesary to keep temp below 10 degrees in making a diazonium ion |
As it decomposes above 10 degrees |
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Explain peak integrations |
Ratio of x:y:z State molecule it applies to E.g ch3:ch2:ch3 |
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What turns CH3CONH2 into CH2CN |
p4O10 |
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How does chemisorption take place |
Molecules absorbed. Weakens bonds. Lowers activation energy |
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Role of Hb |
Oxygen forms bond with Fe2+ carried around body c |
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What is the anti cancer drug (draw) |
Back (Definition) |
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What is reagent C |
NaNo2 |
