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A2 Chemistry Help

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    • Thread Starter

    Stuck on question 22 a (ii) on the Edexecel Chemistry June 2015 paper, I'm not really sure how to construct the equation, if someone can walk me through and explain it, it would be much appreciated



    there is no 22nd question in u4 and in u5, the 22nd question a)ii) is about why a solution is coloured.
    is that your question?
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