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    Grr, my text book and revision guide say 2 different things so I'm confused

    Is Al2O3 a giant ionic lattice with ionic bonding or covalent bonding? Or intermediate bonding (dunno what that is!)

    And for Sulphur and oxygen, what is the state of SO3 at rtp and what catalyst is needed in this reaction??


    Thankssss

    Oh and also.. Does any know the marks needed to get an A in any of the past exam papers?
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    (Original post by violet)
    Grr, my text book and revision guide say 2 different things so I'm confused

    Is Al2O3 a giant ionic lattice with ionic bonding or covalent bonding? Or intermediate bonding (dunno what that is!)

    And for Sulphur and oxygen, what is the state of SO3 at rtp and what catalyst is needed in this reaction??


    Thankssss

    Oh and also.. Does any know the marks needed to get an A in any of the past exam papers?
    hey violet! Al203 im pretty sure is ionic with a giant lattice! thats what ill be putting in exams anyway

    sulphur and oxygen needs a platinum catalyst and SO3 is a liquid!
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    (Original post by jayrox)
    hey violet! Al203 im pretty sure is ionic with a giant lattice! thats what ill be putting in exams anyway

    sulphur and oxygen needs a platinum catalyst and SO3 is a liquid!
    That's all the stuff it says in my revision guide..
    But the OCR textbook is different.. Are you 100% sure Jay?
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    (Original post by violet)
    That's all the stuff it says in my revision guide..
    But the OCR textbook is different.. Are you 100% sure Jay?
    hmm i just looked at the book and for S + 02 = 2S03 they says so3 is a gas and a V205 catalyst lol! the guide says liquid and platinum! wtf lol
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    I know.. That's why im confused!
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    (Original post by violet)
    Grr, my text book and revision guide say 2 different things so I'm confused

    Is Al2O3 a giant ionic lattice with ionic bonding or covalent bonding? Or intermediate bonding (dunno what that is!)

    And for Sulphur and oxygen, what is the state of SO3 at rtp and what catalyst is needed in this reaction??


    Thankssss

    Oh and also.. Does any know the marks needed to get an A in any of the past exam papers?
    My chemistry teacher told me that AL2O3 is a giant ionic lattice with covalent characteristics. I dont know the dynamics of her teachings, but take what u want out of it
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    i thought Al2O3 had intermediate bonding- because Al is very small, and so causes polarisation of the O, so giving it some covalent character, but it is a giant ionic lattice (which is why its called intermediate bonidng)
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    (Original post by violet)
    I know.. That's why im confused!
    OCR being gays! the same people wrote the books ffs.. why cant they make life easier
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    I know.. They want us to fail :eek:
    Which we probably will already without their mistakes!
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    (Original post by violet)
    I know.. They want us to fail :eek:
    Which we probably will already without their mistakes!
    at least we will all fail together?
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    (Original post by jayrox)
    hmm i just looked at the book and for S + 02 = 2S03 they says so3 is a gas and a V205 catalyst lol! the guide says liquid and platinum! wtf lol

    mine says 2SO2 + O2 --> 2SO3 with v2o5 catalyst
    and that its a liquid at rm temp pressure
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    have you guys seen past papers? they seem to follow a pattern. the ones i have done have always had a long question on group 3 chlorides or oxides....
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    (Original post by CogitoErgoSum)
    have you guys seen past papers? they seem to follow a pattern. the ones i have done have always had a long question on group 3 chlorides or oxides....
    Ive done 2
    I have to do them all today.
    I did the Jan 02 and June 02 ones and one of them had a long question on ligand substitution... which I used to hate but I'm starting to like now!
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    (Original post by CogitoErgoSum)
    mine says 2SO2 + O2 --> 2SO3 with v2o5 catalyst
    and that its a liquid at rm temp pressure
    Is that your OCR text book that says that?
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    (Original post by violet)
    Is that your OCR text book that says that?

    no, a little revision booklet my chem teachers made...
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    (Original post by CogitoErgoSum)
    no, a little revision booklet my chem teachers made...
    Ooh, ok.. well seeing as I have nothing else to go by, I'll take your word for it!
    So then if I fail then I can blame you! :p:
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    (Original post by violet)
    Ive done 2
    I have to do them all today.
    I did the Jan 02 and June 02 ones and one of them had a long question on ligand substitution... which I used to hate but I'm starting to like now!
    omg that ligand Q was a diamond 1! easy 15 marks! you will never see a Q so easy again i promise you! the examiner must have got married the day before they wrote that Q!
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    (Original post by jayrox)
    omg that ligand Q was a diamond 1! easy 15 marks! you will never see a Q so easy again i promise you! the examiner must have got married the day before they wrote that Q!
    Haha, lets hope this isn't the year he/she got divorced :eek:
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    (Original post by violet)
    Haha, lets hope this isn't the year he/she got divorced :eek:
    violet.. you just know it is!! :p:
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    (Original post by jayrox)
    violet.. you just know it is!! :p:
    Yeh, knowing my luck :rolleyes:
 
 
 
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