Question

\[\ce{\underset{Ammonia}{NH3(g)} + \underset{Hydrogen chloride}{HCl(g)} -> \underset{Ammonium chloride}{NH4Cl(s)}}\]

\[\ce{2Mg + O2 -> 2MgO}\]

\[\ce{\underset{Calcium oxide}{CaO} + \underset{water}{H2O} -> \underset{Calcium hydroxide}{Ca(OH)2} + Heat}\]

1. What is the number of reactants in each of the above reactions?
2. What is the number of molecules of reactants taking part in the above reactions?
3. How many products are formed in each of the above reactions?

Answer 1

1. There are two reactants in each of the above reactions.
2. The above (1) and (3) reactions, the number of molecules of reactants are two and reaction (2) has three molecules of reactants.
3. A single product is formed in each of the above reactions.