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    The question asked what was the ionic equation for CuO(s) + H2SO4 (aq)

    I thought it was Cu2+(s) +SO4(2-)(aq) -> CuSO4(aq)

    The answer is CuO(s) + H2(+)(aq) -> Cu(2+)aq +H2O (l)

    I understand mine is wrong because you can't have solid copper ions.

    Can someone tell me how to correctly decide which ions are spectators to the reaction in general so i can do questions of this type?

    Thanks alot!
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    The spectator ions are the ones which don't change state.
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    Also you can't split a solid into its ions, only when it's aqueous you can


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    (Original post by Alduin)
    The spectator ions are the ones which don't change state.
    That what I thought in hindsight as none of the ionic charges appeared to change, which is what i usually go by. Thank you for confirming
 
 
 
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Updated: April 10, 2013
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