Which of the following must have been true about the reaction that produced this net ionic equation?

H3O+ (aq) + OH−(aq) --> 2H2O(l)

A. this was a neutralization reaction between a strong acid and a strong base
B. this was a chemical reaction that produced a precipitate
C. this reaction had to have happened outside an aqueous system
D. this was a reaction without spectator ions

I think the answer is A but I'm not sure... Can someone double-check? Thanks!

1 answer

I would go with A also.