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OCR A Chemistry F322 Chains, Energy and Resources Thu 19 Jan 2012

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Original post by dee11
Hey! are we all askng questions to help with revision here?


sure
Got any?

Oh and answer mine while you're at it :smile:
Original post by darkxangel
correct.

Suggest uses for polymer waste and how we can get rid of it (6)

How can waste hydrogen be used (in what process)? (2)


Where are you getting all these questions from?

Are they PP questions?
Reply 82
Avatar for Lindizya
Lindizya
has anyone got a link to the specimen paper?
Original post by feather18
hey does anyone know where i can get june 2011 f322 past paper? :smile:


http://www.a-levelchemistry.co.uk/OCR%20Chemistry%20A/Unit%202/Unit%202%20resources.html

Scroll down to find the past paper and MS for June/Jan 2011 :smile:
Reply 84
Avatar for zainahmed
zainahmed
yo yo yo let the revision begin throw some questions at me my chemists all stars!!!!!!!!!!! g star 4 lyf
Original post by Lindizya
has anyone got a link to the specimen paper?



http://www.ocr.org.uk/download/assess_mat/ocr_7765_sam_gce_unit_f322.pdf

:smile:
Original post by zainahmed
yo yo yo let the revision begin throw some questions at me my chemists all stars!!!!!!!!!!! g star 4 lyf


whats everything you know about polymers?
Original post by darkxangel
correct.

Suggest uses for polymer waste and how we can get rid of it (6)

How can waste hydrogen be used (in what process)? (2)


Haber process, what else?
Original post by splendidsun
Where are you getting all these questions from?

Are they PP questions?


my brain :wink:
Reply 89
Avatar for Lindizya
Lindizya
Original post by splendidsun


thank you! :smile:
Reply 90
Avatar for otrivine
otrivine
14
Original post by darkxangel
How does a catalytic converter work? (4)


- adsorption of reactants
- bonds weaken
-desorption of products
the formula
NO+CO GIVE 1/2N2+CO2
Original post by LifeIsGood
Haber process, what else?


Margarine production
Reply 92
Avatar for zainahmed
zainahmed
Original post by splendidsun
whats everything you know about polymers?


polymers are made up of monomers which is an alkene
polymer waste is a problem lack of space in land fills etc
we can recycle them which involves sorting and reclamation
scientists are begining to develop biodegradeable plastics
we should recycle polymenrs
burning old polymers can also be a good fuel cource but this produce co2
polmer waster can also be used in feedstock recycling
Reply 93
Avatar for zainahmed
zainahmed
Original post by splendidsun
Margarine production


Hydrogenation of margerine to be exact :smile:
Reply 94
Avatar for dee11
dee11
Original post by splendidsun
sure
Got any?

Oh and answer mine while you're at it :smile:


Biofuels are fuels such as ethanol, methanol? which i think burn more cleanly so have environmental benefits and are also are looking to replace the finite sources we have now

adv of fermentation; low temperatures and pressures used so less energy,

disad of fermenation; not 100% atom economy, only 14% conversion

adv of hydration of ethene; 100% atom eeconommy achieved

disadv of hydration of ethene; high temperatures and pressure used, which could be a health risk for workes

anything ive missed out?? :smile:
Reply 95
Avatar for dee11
dee11
Original post by zainahmed
yo yo yo let the revision begin throw some questions at me my chemists all stars!!!!!!!!!!! g star 4 lyf


State two factors that affect the contibution of a greenhouse gas to global warming?
Reply 96
Avatar for zainahmed
zainahmed
Im struggling with halogenoalkanes what does evryone know about them?
Original post by dee11
Biofuels are fuels such as ethanol, methanol? which i think burn more cleanly so have environmental benefits and are also are looking to replace the finite sources we have now

adv of fermentation; low temperatures and pressures used so less energy,

disad of fermenation; not 100% atom economy, only 14% conversion

adv of hydration of ethene; 100% atom eeconommy achieved

disadv of hydration of ethene; high temperatures and pressure used, which could be a health risk for workes

anything ive missed out?? :smile:


nooope :smile: but i think the general definition for biofuels is fuels that have been made from recently living materials like plants
Reply 98
Avatar for zainahmed
zainahmed
Original post by dee11
State two factors that affect the contibution of a greenhouse gas to global warming?


the amount of radiation it can absord i think its infared radiation? correct me if am wrong

and its relative concentration in the atmosphere

the amount a gas has and effect is measured by its GWP global warming potential score
Reply 99
Avatar for dee11
dee11
Original post by splendidsun
sure
Got any?

Oh and answer mine while you're at it :smile:


why does 1-Iodopropane hydrolyed faster than 1-bromopropane?

starting off pretty easy:biggrin:

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