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    How is the H2SO3 acting as an oxidizing agent in

    H2S + H2SO3 --> H2O + 3S

    ???
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    (Original post by upthegunners)
    How is the H2SO3 acting as an oxidizing agent in

    H2S + H2SO3 --> H2O + 3S

    ???
    Cheers
    Work out the oxidation state of the sulfur in the left/right hand sides.
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    Do you know how to assign oxidation numbers? Is this AS or A2? It's an oxidising agent because it oxidises another element/ molecule by taking electrons from it. Write the oxidation numbers for each atom in a molecule under the equation and you'll see what I mean.
 
 
 
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