Question

The spectator ion in the equation is


a. (aq)
b. Cu(s)
c. SO4^2-
d. Mg(s)
e. (aq)

Answer 1

I can’t see the chemical equation — the problem statement you pasted is missing the reaction. Could you paste the full equation (or a picture)?

If you want to proceed now, here’s how to identify the spectator ion:
- Write the complete ionic equation (split all soluble strong electrolytes into ions).
- Any ion that appears unchanged on both sides (same charge and phase) is a spectator ion.
- Solids (e.g., Cu(s), Mg(s)) are not spectator ions because they appear as atoms, not dissolved ions.
- Common spectator ions are aqueous ions like Na+, K+, NO3−, Cl−, SO4^2− (but only if they remain dissolved and unchanged).

Send the equation and I’ll pick the correct option and show work.