A student performs three separate chemical procedures in the laboratory and records the balanced net ionic equations shown in the table below. | Reaction | Chemical equation | | :--- | :--- | | 1 | \(\text{Ba}^{2+}\text{(aq)} + \text{SO}_4^{2-}\text{(aq)} \rightarrow \text{BaSO}_4\text{(s)}\) | | 2 | \(\text{H}_2\text{PO}_4^-\text{(aq)} + \text{NH}_3\text{(aq)} \rightleftharpoons \text{HPO}_4^{2-}\text{(aq)} + \text{NH}_4^+\text{(aq)}\) | | 3 | \(\text{ClO}^-\text{(aq)} + 2\,\text{I}^-\text{(aq)} + 2\,\text{H}^+\text{(aq)} \rightarrow \text{Cl}^-\text{(aq)} + \text{I}_2\text{(aq)} + \text{H}_2\text{O(l)}\) | Which of the following correctly identifies the role of a species in one of the reactions? • Nerd Notes

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IntermediateMCQConceptual19.6k

A student performs three separate chemical procedures in the laboratory and records the balanced net ionic equations shown in the table below.

Reaction	Chemical equation
1	\(\text{Ba}^{2+}\text{(aq)} + \text{SO}_4^{2-}\text{(aq)} \rightarrow \text{BaSO}_4\text{(s)}\)
2	\(\text{H}_2\text{PO}_4^-\text{(aq)} + \text{NH}_3\text{(aq)} \rightleftharpoons \text{HPO}_4^{2-}\text{(aq)} + \text{NH}_4^+\text{(aq)}\)
3	\(\text{ClO}^-\text{(aq)} + 2\,\text{I}^-\text{(aq)} + 2\,\text{H}^+\text{(aq)} \rightarrow \text{Cl}^-\text{(aq)} + \text{I}_2\text{(aq)} + \text{H}_2\text{O(l)}\)

Which of the following correctly identifies the role of a species in one of the reactions?

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