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The chemical equation here describes a reaction between barium carbonate and nitric acid.

[tex]\[ \text{BaCO}_3(s) + \text{HNO}_3(l) \rightarrow \text{Ba}(\text{NO}_3)_2(aq) + \text{CO}_2(g) + \text{H}_2\text{O}(l) \][/tex]

Which statement most accurately identifies a reactant in the solid state?

A. [tex]\(\text{BaCO}_3\)[/tex]

B. [tex]\(\text{HNO}_3\)[/tex]

C. [tex]\(\text{Ba}(\text{NO}_3)_2\)[/tex]

D. [tex]\(\text{CO}_2\)[/tex]



Answer :

GinnyAnswer
To identify a reactant in the solid state for the given chemical reaction:

[tex]\[ \text{BaCO}_3 (\text{s}) + \text{HNO}_3 (\text{l}) \rightarrow \text{Ba}(\text{NO}_3)_2 (\text{aq}) + \text{CO}_2 (\text{g}) + \text{H}_2\text{O} (\text{l}) \][/tex]

Let's analyze each compound:

1. BaCO3 (Barium carbonate)
- The notation [tex]\((\text{s})\)[/tex] indicates that BaCO3 is in the solid state.

2. HNO3 (Nitric acid)
- The notation [tex]\((\text{l})\)[/tex] indicates that HNO3 is in the liquid state.

3. Ba(NO3)2 (Barium nitrate)
- The notation [tex]\((\text{aq})\)[/tex] indicates that Ba(NO3)2 is in the aqueous state (dissolved in water).

4. CO2 (Carbon dioxide)
- The notation [tex]\((\text{g})\)[/tex] indicates that CO2 is in the gaseous state.

Among the reactants, BaCO3 is identified in the solid state ([tex]\((\text{s})\)[/tex]).

Thus, the most accurate statement identifying a reactant in the solid state is:
- BaCO_3

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