Step 2: Consult the solubility rules connected above to identify whether each substance will dissociate:

2 HI+


BaI2+2 H2O




Tip 3: Dissociate all soluble salts, strong acids, and also solid bases (except calcium hydroxide). Leave together all "not soluble" salts and weak acids or bases. Note that once H3O+ loses a proton, a water molecule is developed.

2H3O+ (aq) + 2I- (aq) + Ba2+ (aq) + 2OH- (aq)Ba2+ (aq) + 2I- (aq) + 4 H2O (l)

Tip 4: Cross out "spectator ions" that show up on both sides of the reactivity (these ions carry out not get involved in the chemistry) and recompose the "net" reaction using the smallest possible coefficients.

H3O+ (aq) + OH- (aq) 2 H2O (l)

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∙ 8y ago
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