Question

НNO3 + Na2SiO3 — ? HNO3 + CaCO3 — ?

Answer 1

1)2НNO3 + Na2SiO3-->2NaNO3+H2SiO3

2) 2HNO3 + CaCO3-->Ca(NO3)2 + CO2 + H2O

Answer 2

The chemical equations for the given reactions are:

1. HNO3 + Na2SiO3 → NaNO3 + H2SiO3
2. HNO3 + CaCO3 → Ca(NO3)2 + CO2 + H2O

In the first equation, nitric acid (HNO3) reacts with sodium silicate (Na2SiO3) to form sodium nitrate (NaNO3) and silicic acid (H2SiO3).

In the second equation, nitric acid (HNO3) reacts with calcium carbonate (CaCO3) to form calcium nitrate (Ca(NO3)2), carbon dioxide (CO2), and water (H2O).