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yep seems like thatSolve OCR papers then
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yep seems like thatSolve OCR papers then
yep seems like that
Only two papers in every Oct/Nov session only are same. Otherwise, every other paper is different.Different variants have same kind of questions?
I solved all variant 11s now I came back to 12 ones and they all basically seem the same
If E cell is positive then the reaction will be proceeding in forward direction. This means more products will be formed.June 13 P41, 1) c) ii)
mark scheme ays its forward (more product) because E is more than 0 (its positive)
but isnt that always the case ?? Even if both half cells is negative its going to be (-0.12)-(-0.67)= positive??
so why are there more products?
It depends! chemguide is one of the best site for chemistry. ^_^Any advice on how to study whole chemistry in 2 weeks? I have done Maths and Physics with past papers just left with chem. Any advice or links/pdfs/pics/notes would be really helpful.
what do you mean by only two papers are same?Only two papers in every Oct/Nov session only are same. Otherwise, every other paper is different.
There are 3 variants of Chemistry papers. Out of those 3, 2 are same in every Oct/Nov session.what do you mean by only two papers are same?
oh really? I didn't know that, thanxThere are 3 variants of Chemistry papers. Out of those 3, 2 are same in every Oct/Nov session.
E cell is always positive thoughIf E cell is positive then the reaction will be proceeding in forward direction. This means more products will be formed.
J is formed by replacing H from the tertiary carbon in the middle. This happens at rate=21.Help part b ivView attachment 60404
Not always...E cell is always positive though
I realised.Not always...
wait i dont get how E cell can be negative LOLNot always...
June 13 P41, 1) c) ii)
mark scheme ays its forward (more product) because E is more than 0 (its positive)
but isnt that always the case ?? Even if both half cells is negative its going to be (-0.12)-(-0.67)= positive??
so why are there more products?
wait i dont get how E cell can be negative LOL
How can E cell be negative?
Ecell will be positive for reactions which are feasible/spontaneous in the forward direction. If Ecell is negative then the reaction is feasible only for the backward direction.I realised.
Can you explain why having a positive E cell mean there are more products?
I realised.
Can you explain why having a positive E cell mean there are more products?
wait i dont get how E cell can be negative LOL
How can E cell be negative?
As TariqBhai explained, if Ecell value is positive means reaction will be occurring. As reaction is occurring that simply means reaction is moving in forward direction. This means more product. And the reaction which arent feasible are the ones that have negative Ecell and the reaction will move backwards.Ecell will be positive for reactions which are feasible/spontaneous in the forward direction. If Ecell is negative then the reaction is feasible only for the backward direction.
Since you calculated that Ecell was positive then the reaction:
2Fe + 2I <=> 2Fe+ I 2
Will only occur in the forward direction: 2Fe + 2I => 2Fe+ I 2
If Ecell was negative then the reaction would only occur in backward direction: 2Fe+ I 2 => 2Fe + 2I
MS is talking about Ecell and not E.
I couldnt find any ms. But here is what u can get idea similar to ms. http://papers.gceguide.com/A Levels/Chemistry (9701)/9701_w15_er.pdfocto nov 2015 mark scheme 21??????
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