Edexcel IAL Chemistry Unit 1 (WCH01 )/ May 27 June 2016

It was good.
What was the answer for the very last question about Shane gas?


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i wrote that amount of polymers may increase but to a little extent as percentages are low

I AM SURE THIS IS MOST PROBABLY WRONG BUT THIS IS WHAT I DID.
The question asked about the polymers and I remember it said "Poly(ethene) relative to Poly(propene)" So since it said relative I guess we have to compare the two as its obvious it will increase.. The question data was something like this:
Methane-90% Ethane-0.6% Propane-0.4% Butane-0.4%

Since poly(ethene) can be formed only from ethane, propane and butane and not methane because it has only 1 carbon and cannot be cracked into a ethene molecule, the percentage of shale that could be used to make poly(ethene) would be 0.6%+ 0.4%+ 0.4% = 1% . So 1% of shale can be used to make poly(ethene).

Since poly(propene) can only be formed from propane and butane and not ethane and not methane, the percentage of shale that could be used to make poly(propene) will be 0.4% + 0.4% =0.8% .

Hence increased amounts of both polymers can be formed but more poly(ethene) is formed as 1% of shale can be used while 0.8% of shale can be used to make poly(propene)

Idk about this ans tho

and what did you choose for the mcq where gases were remaining at the end ?
i chose 100 cm3

lol it was of 2 marks and wtf there's no need for such detail

lol it was of 2 marks and wtf there's no need for such detail

What about that deflection question was the line above or below?


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it was 75

It was good.
What was the answer for the very last question about Shane gas?


Posted from TSR Mobile

Ethane and propane are used to make ethene and propene by dehydrogenation reaction. This ethene and propene is used to make poly ethene and poly propene. But since, Ethane and Propane are required for the manufacture of Shane gas, the production of poly ethene and poly propene decreases.

What about that deflection question was the line above or below?


Posted from TSR Mobile

What was the helium question?
what was the answer to the question where u had to state an assumption to the enthalpy change for the hess law?
what was the answer to the shell question?

I wrote that Helium has very low atomic mass (its very light) and hence can be deflected more easily by the magnetic field.

Shells : 3p 3s 3s 2p

I don't really recall an assumption for the Hess's law.