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  5. What are the bubbles produced by putting aluminum in lemon juice?
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What are the bubbles produced by putting aluminum in lemon juice?

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paul.fr

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What are the bubbles produced by putting aluminum in lemon juice?
« on: 23/11/2008 20:54:33 »
I have this cup full of lemon juice, and everytime i put a strip of aluminium in to it, bubbles form! What are these bubbles and why are they being produced?
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    • What are the bubbles produced by putting aluminum in lemon juice?
    « Reply #1 on: 23/11/2008 21:45:38 »
    Quote from: Paul. on 23/11/2008 20:54:33
    I have this cup full of lemon juice, and everytime i put a strip of aluminium in to it, bubbles form! What are these bubbles and why are they being produced?
    2Al + 2H3Citr → 2AlCitr + 3H2

    where H3Citr means citric acid and AlCitr means aluminum citrate. The hydrogen gas H2 is responsible of the bubbles.

    Anyway AlCitr idrolizes in water forming Al2(OH)3 and H3Citr again.
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