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Ionic equation question

2Al(s) + 2KOH(aq) + 2H2O(l) -------> 2KAlO2(aq) + 3H2(g)

(i) Write a balanced ionic equation for this reaction.

the answer of it is :
2Al(s) + 2OH−(aq) +2H2O(l) ------> 2AlO2- (aq) +3H2(g)
what I don't understand is why don't we split the 2KAlO2 (aq)? to "2K+ + 2Al3+ + 2O2-?

because in the mark scheme , it said 2AlO2-
Original post by qatarownz
2Al(s) + 2KOH(aq) + 2H2O(l) -------> 2KAlO2(aq) + 3H2(g)

(i) Write a balanced ionic equation for this reaction.

the answer of it is :
2Al(s) + 2OH−(aq) +2H2O(l) ------> 2AlO2- (aq) +3H2(g)
what I don't understand is why don't we split the 2KAlO2 (aq)? to "2K+ + 2Al3+ + 2O2-?

because in the mark scheme , it said 2AlO2-


Nothing happens to the potassium ions. They are spectator ions. They are balancing aluminate ions, not aluminium ions and oxygen ions.

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