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Ionic equations.

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!
Reply 1
Avatar for Alduin
Alduin
The spectator ions are the ones which don't change state.
Reply 2
Avatar for Bambi_bambi
Bambi_bambi
Also you can't split a solid into its ions, only when it's aqueous you can


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Reply 3
Avatar for Goods
Goods
OP
16
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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