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    Sulfur dioxide is used as a preservative in wine making.The following equations describe how sulfur dioxide dissolves.H2O + SO2 HSO3– + H+HSO3– + H+ SO32– + 2H+Which statement about these two reactions is correct?

    A HSO3– acts as a base.B SO2 acts as an oxidising agent.C SO32– acts as an acid.D SO32– acts as a reducing agent.

    Answer is A, why?

    Thank you!
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    With your unfortunately terrible layout, it is hard to say, but...

    There is no change in oxidation state at any stage, so B and D can't be right.
    C can't be correct as SO32- doesn't contain H+, so how could it act as an acid (Shut it Gilbert!)
    So that leaves A, which must be right. Not that it appears to be accepting H+, but at least it can.
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    (Original post by Deathlotus)
    9701_w11_qp_11
    Sulfur dioxide is used as a preservative in wine making.The following equations describe how sulfur dioxide dissolves.H2O + SO2 HSO3– + H+HSO3– + H+ SO32– + 2H+Which statement about these two reactions is correct?

    A HSO3– acts as a base.B SO2 acts as an oxidising agent.C SO32– acts as an acid.D SO32– acts as a reducing agent.

    Answer is A, why?

    Thank you!
    is this an elimination reaction?
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    (Original post by thefatone)
    is this an elimination reaction?
    Only in that it eliminates nasty bugs from glassware used for wine-making ...
 
 
 
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