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    In my old specification text book there's a question saying:Write a half equation for the formation of Pb2+ and water from PbO2 in the presence of H+ ions.Now I know you have to add H+s and H2Os to balance it but how come in my CGP book there's absolutely no mention of it? Is it not required in the specification anymore?
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    (Original post by Kraytz)
    In my old specification text book there's a question saying:Write a half equation for the formation of Pb2+ and water from PbO2 in the presence of H+ ions.Now I know you have to add H+s and H2Os to balance it but how come in my CGP book there's absolutely no mention of it? Is it not required in the specification anymore?
    No you do have to know it. I don't know why it isn't in your book, try flicking through the pages.
 
 
 
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