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Advanced Higher Chemistry question - equilibrium (anyone can help!) Watch

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    Hi
    I am stuck on this question (I know b and have an answer for c (I got 6.63 but I have no idea if this is right)
    I am not sure what part a is asking of me? It just sounds like it wants me to write formula Kw=[H+][OH-] but that surely can't be right? I will try attach the photo as a response to this Thank you!
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    (Original post by Puppo)
    Hi
    I am stuck on this question (I know b and have an answer for c (I got 6.63 but I have no idea if this is right)
    I am not sure what part a is asking of me? It just sounds like it wants me to write formula Kw=[H+][OH-] but that surely can't be right? I will try attach the photo as a response to this Thank you!
    Here is the question (there is no marking scheme online btw)
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    Look at the marking, it's 1 mark, all they want is the correct expression
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    (Original post by iElvendork)
    Look at the marking, it's 1 mark, all they want is the correct expression
    so I was right to put just the formula? I was confused as I've never had a question ask me for a formula that's in the data booklet haha. Thank you for helping me out!
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    (Original post by Puppo)
    Hi
    I am stuck on this question (I know b and have an answer for c (I got 6.63 but I have no idea if this is right)
    I am not sure what part a is asking of me? It just sounds like it wants me to write formula Kw=[H+][OH-] but that surely can't be right? I will try attach the photo as a response to this Thank you!
    You have deduced a) correctly.

    You have the correct answer for c). The key is realising that for pure water [H+] = [OH-] and therefore Kw = [H+]^2 (For pure water only)
    I think you must have realised this judging by your correct answer.
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    (Original post by TutorsChemistry)
    You have deduced a) correctly.

    You have the correct answer for c). The key is realising that for pure water [H+] = [OH-] and therefore Kw = [H+]^2 (For pure water only)
    I think you must have realised this judging by your correct answer.
    Thank you, it makes much more sense!
 
 
 
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