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1. Write the balanced chemical equations for the following reactions.
Sodium carbonate on reaction with hydrochloric acid in equal molar concentrations gives sodium chloride and sodium hydrogen carbonate.
 
The balanced chemical equation of the above statement is
​+ \(HCl\) → \(NaCl\) +
 
2. A solution of potassium chloride when mixed with silver nitrate solution, an insoluble white substance is formed. Write the chemical reaction involved and also mention the type of the chemical reaction?
  
Balanced equation for the given statement is
\(KCl\)(s) + \(AgNO_3\)​(aq) → \(AgCl\)(s) + \(KNO_3\)​(aq).
 
Both reactants (potassium chloride and silver nitrate) exchange ions for producing new products; therefore, it's a reaction. It's also a reaction because white silver chloride (AgCl) precipitates are formed.