Answer:
Option D ([tex]NaNO_3[/tex])
Explanation:
Acids react with metal to form salt and hydrogen gas.
Metals which are more reactive than hydrogen evolve hydrogen gas on reaction with acid.
For example:
Magnesium reacts with hydrogen chloride to form magnesium chloride and hydrogen.
2HCl(aq) + Mg(s) → MgCl2(aq) + H2(g)
Al and Zn are more reactive than hydrogen, therefore, these metals evolve hydrogen gas on reaction with acid.
[tex]NaNO_3[/tex] reacts with HCl to form NaCl and nitric oxide.
[tex]HCl+NaNO_3 \rightarrow NaCl+HNO_3[/tex]
[tex]K_2CO_3[/tex] reacts with HCl to form potassium chloride, carbon dioxide and water.
[tex]HCl+K_2CO_3 \rightarrow KCl+CO_2+H_2O[/tex]
As reaction of [tex]NaNO_3[/tex] does not evolve any gas, therefore, the correct option is D.
