CH-1032

Reactions of acids

Chemistry · Secondary 4 · Hard · Reactions of acids

A student reacts aqueous barium nitrate with aqueous sodium sulfate.
A white solid forms immediately.
Which ionic equation correctly represents the precipitation reaction?

$\text{Ba}^{2+}(aq) + \text{SO}_4^{2-}(aq) \to \text{BaSO}_4(s)$
$\text{Ba}(s) + \text{SO}_4^{2-}(aq) \to \text{BaSO}_4(aq)$
$\text{Ba}^{2+}(aq) + 2\text{NO}_3^-(aq) \to \text{Ba(NO}_3)_2(s)$
$2\text{Na}^+(aq) + \text{SO}_4^{2-}(aq) \to \text{Na}_2\text{SO}_4(s)$

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