Formulae, equations and hazards

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Question 7
Medium

To safely treat a spill of dilute hydrochloric acid on a laboratory bench, a technician sprinkles solid sodium hydrogencarbonate, NaHCO3(s)\text{NaHCO}_3\text{(s)}NaHCO3​(s), over the affected area until effervescence ceases.

Which of the following represents the correct balanced ionic equation, including state symbols, for this hazard-mitigating reaction?

HCO3−(aq)+H+(aq)→H2O(l)+CO2(g) \text{HCO}_3^-\text{(aq)} + \text{H}^+\text{(aq)} \rightarrow \text{H}_2\text{O(l)} + \text{CO}_2\text{(g)} HCO3−​(aq)+H+(aq)→H2​O(l)+CO2​(g)
NaHCO3(s)+H+(aq)→Na+(aq)+H2O(l)+CO2(g) \text{NaHCO}_3\text{(s)} + \text{H}^+\text{(aq)} \rightarrow \text{Na}^+\text{(aq)} + \text{H}_2\text{O(l)} + \text{CO}_2\text{(g)} NaHCO3​(s)+H+(aq)→Na+(aq)+H2​O(l)+CO2​(g)
NaHCO3(s)+H+(aq)→Na+(aq)+H2O(aq)+CO2(g) \text{NaHCO}_3\text{(s)} + \text{H}^+\text{(aq)} \rightarrow \text{Na}^+\text{(aq)} + \text{H}_2\text{O(aq)} + \text{CO}_2\text{(g)} NaHCO3​(s)+H+(aq)→Na+(aq)+H2​O(aq)+CO2​(g)
Na+(aq)+HCO3−(aq)+H+(aq)→Na+(aq)+H2O(l)+CO2(g) \text{Na}^+\text{(aq)} + \text{HCO}_3^-\text{(aq)} + \text{H}^+\text{(aq)} \rightarrow \text{Na}^+\text{(aq)} + \text{H}_2\text{O(l)} + \text{CO}_2\text{(g)} Na+(aq)+HCO3−​(aq)+H+(aq)→Na+(aq)+H2​O(l)+CO2​(g)

Formulae, equations and hazards Questions

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