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    (Original post by neil20143)
    I'd say Grade Boundaries would be slightly lower than last year for both:
    Unit 2 : 46/60 A*
    Unit 3: 44/60 A*

    The problem with Unit 3 was that some of the questions were either know it or not.

    Did anyone else get Sulfuric Acid as the catalyst to make Ethyl Ethanoate?
    yep , correct!
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    (Original post by neil20143)
    I'd say Grade Boundaries would be slightly lower than last year for both:
    Unit 2 : 46/60 A*
    Unit 3: 44/60 A*

    The problem with Unit 3 was that some of the questions were either know it or not.

    Did anyone else get Sulfuric Acid as the catalyst to make Ethyl Ethanoate?
    yep , correct! i did.
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    (Original post by Tuffyandtab)
    So did i
    (Original post by neil20143)
    For Metal Oxide I wrote base?
    so did i
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    (Original post by neil20143)
    I'd say Grade Boundaries would be slightly lower than last year for both:
    Unit 2 : 46/60 A*
    Unit 3: 44/60 A*

    The problem with Unit 3 was that some of the questions were either know it or not.

    Did anyone else get Sulfuric Acid as the catalyst to make Ethyl Ethanoate?
    I got the ethyl ethanoate part but not the sulfuric acid.

    Did you understand the question which asked how a catalyst works? I didn't have a clue!

    I think it was worth 2 marks (Can't really remember).
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    What question was the one about "Are metal oxides bases or alkalis?" in... like what were the other questions around it because I don't remember seeing that and starting to worry i missed a page :/
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    For the filling in the blanks question I put moles then 12C. Will I still get the marks?
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    (Original post by emileepifanoff)
    I got the ethyl ethanoate part but not the sulfuric acid.

    Did you understand the question which asked how a catalyst works? I didn't have a clue!

    I think it was worth 2 marks (Can't really remember).
    It lowers the activation energy but I completely forgot about it at the time, so I just made something up :P
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    I put concentrated acid (sulfuric acid) would I still get the marks?
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    (Original post by emileepifanoff)
    I got the ethyl ethanoate part but not the sulfuric acid.

    Did you understand the question which asked how a catalyst works? I didn't have a clue!

    I think it was worth 2 marks (Can't really remember).
    would you get 2 marks for saying lowers the activation energy or would you have to same something else as well
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    also does anyone know if i will get the marks for writing different pressures on the polymer question???
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    (Original post by 11Jason11)
    I put concentrated acid (sulfuric acid) would I still get the marks?
    yeah, I think they were looking for any named acids really cause any acid catalyst can be used in the process but sulphuric acid is the one mentioned in textbooks
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    Omg I put Pb3O2 by accident I'm such an idiot
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    I put concentrated acid (sulfuric acid) would I still get the marks?
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    (Original post by lewiswallis)
    also does anyone know if i will get the marks for writing different pressures on the polymer question???

    That should be right as it is changing a reaction condition which is primarily what the questions asks for for one of the reasons. (They've asked it before)
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    (Original post by rumana101)
    yeah, I think they were looking for any named acids really cause any acid catalyst can be used in the process but sulphuric acid is the one mentioned in textbooks
    i think acid on its own would be fine, CGP Textbook says "an acid catalyst (e.g. concentrated sulfuric acid)" - and the question wasn't linked specifically to ethyl ethanoate, was it? i thought it just said what catalyst is used in the production of esters (or something along that)
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    There was a question about writing a compound that contains silver ions. I wrote silver nitrate - is that correct?
    The next question was something about a substance containing carbonate ions - I wrote zinc carbonate - will that get a mark?
    I didn't really understand what the question was asking so I just guessed for both haha,
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    Aren't metal oxides insoluble?
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    (Original post by Blueyy__)
    i think acid on its own would be fine, CGP Textbook says "an acid catalyst (e.g. concentrated sulfuric acid)" - and the question wasn't linked specifically to ethyl ethanoate, was it? i thought it just said what catalyst is used in the production of esters (or something along that)
    i wrote vinegar would i get a mark for that?
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    (Original post by AmyRevises)
    What question was the one about "Are metal oxides bases or alkalis?" in... like what were the other questions around it because I don't remember seeing that and starting to worry i missed a page :/
    it was for the question on soluble substances with the table
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    for the aluminum question, would bauxite suffice as to aluminum oxide?
 
 
 
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