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oxidising and reducing agents watch

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    Could you please explain what oxidising and reducing agents are and how can you tell which is which in a reaction?

    Thanks
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    The oxidising agent is the one that gets reduced itself and the other substance gets oxidised. i.e its oxidation number gets smaller.

    The reducing agent is the one that gets oxidised itself and the other substance gets reduced. i.e its oxidation number gets bigger.

    Hope that helps good luck for 2moro if u doing chemistry AS
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    Thanks for your help. Ive got the AS tomorro as well.

    so, an oxidising agent gains electrons?
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    yes oxidising agents... make other substances lose electrons.. so they themselves gain the electrons.
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    So, in this reaction, is KBrO3 the oxidising agent:

    5KBr + KBrO3 + 3H2SO4 = 3Br2 + 3K2SO4 + 3H2O
 
 
 
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