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    Initial [A]/mol dm-3 : 0.020, 0.040, 0.010, 0.060, 0.040

    Initial [B]/mol dm-3: 0.020, 0.40, 0.040, 0.030 .....

    Initial rate mol dm-3 s-1: 1.2x10^-4, 9.6x10^-4, 2.4x10^-4, 8.1x10^-4, 7.2x10^-4

    The question was given as a table type thing: so i tried to copy it in the clearest way, hope you can understand it.
    I worked out K to be 15 and managed to get the rest of the values but the fifth value for Initial [B] is 0.035 but i don't understand how? Can anyone explain
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    Sorry you've not had any responses about this. Are you sure you’ve posted in the right place? Posting in the specific Study Help forum should help get responses.

    I'm going to quote in Tank Girl now so she can move your thread to the right place if it's needed. :yy:

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    Hi......

    I'm also doing this topic and I believe i'm confident on it. Do you mind drawing a table out and uploading the picture as it's hard to make sense of the data in this format.

    Thanks.
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    It's just a case of plugging in the values you have and rearranging:

     r = k [A]^a [B]^b

    you know everything but [B] so just divide across to get the value.
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    i will do so but if you have time, it's here: http://www.a-levelchemistry.co.uk/OC...resources.html
    click on how fast hw 2 and it's the first question.
 
 
 
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