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    If anyone wants any help, pm me or tag me in here. Just finished 3rd year chemical physics
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    (Original post by Lewis H01)
    Do you mean concetration calcualtions?
    In our school we got taught NCV...
    Yeah it's the same thing I'm assuming n stands for number? P just stands for power meaning basically how many h+ or oh- ions there are.


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    (Original post by Jay431)
    Oh well in that case, yes. They always have a titration question.



    I don't use PVC lol.



    Oh I understand now.

    Give us an example and I'll show you what to do.
    Here's an example
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    (Original post by SocialStudiesETC)
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    Here's an example
    Wait what is PVC ?
    I have never used that formula in chemistry at all..
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    (Original post by SocialStudiesETC)
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    Here's an example
    That's just using the mole triangles and molar ratio? I'll try and find one that I mean


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    Hope this helps...??


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    (Original post by Abbyy1234)
    That's just using the mole triangles and molar ratio? I'll try and find one that I mean


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    Thank you
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    What is PVC ? and why haven't I did it
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    (Original post by Ethan100)
    What is PVC ? and why haven't I did it
    http://www.bbc.co.uk/bitesize/interm...on/revision/5/
    This helped me a lot


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    (Original post by SocialStudiesETC)
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    Here's an example
    This is how I do them:
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    (Original post by Ethan100)
    Wait what is PVC ?
    I have never used that formula in chemistry at all..
    I like that question, it's a gift of 3 marks.
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    (Original post by Ethan100)
    What is PVC ? and why haven't I did it
    Don't worry.

    It's just another formula for volumetric titrations.

    It's another way of saying C1V1H+ = C2V2OH-
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    (Original post by Ethan100)
    Do you guys think there are any experiements that we need to know inside out for the exams ?

    I've got these down already...

    + Haber Process
    + Ostwald Process
    + Titration experiment
    + Energy released experiment ( Eh=cmDeltaT)

    Do you know any other that we should know ?
    Percentage composition is also important...
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    Percentage composition is 3 easy marks!

    Thanks for that Jay!
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    (Original post by Lewis H01)
    Percentage composition is also important...
    What's that ?

    Is it when it asks you for a percentage of an element in a compound ?

    So

    %Element = Gfm/Total Gfm x 100
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    Just out of curiosity did anyone else here sit national 5 maths, and if so do you think you will be scoring lower than your target grade on the 9th of August??


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    (Original post by Ethan100)
    What's that ?

    Is it when it asks you for a percentage of an element in a compound ?

    So

    %Element = Gfm/Total Gfm x 100
    Yeah they're amazingly easy questions


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    (Original post by Abbyy1234)
    Just out of curiosity did anyone else here sit national 5 maths, and if so do you think you will be scoring lower than your target grade on the 9th of August??


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    Most Definitely, I will definitely not be achieving my target grade
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    (Original post by Ethan100)
    Most Definitely, I will definitely not be achieving my target grade
    Yeah me too😔 I was a predicted A but I'm barely clinging on to a low b from my rough calculation...


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    (Original post by SocialStudiesETC)
    Percentage composition is 3 easy marks!

    Thanks for that Jay!
    No problem

    (Original post by Ethan100)
    Most Definitely, I will definitely not be achieving my target grade
    (Original post by Abbyy1234)
    Yeah me too😔 I was a predicted A but I'm barely clinging on to a low b from my rough calculation...



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