Some chemical reactions are given below.
1. Zn + 2HCI → ZnCl2 + H2
2. 2Mg + O2 → 2MgO
3. NH4Cl ⇌ NH3 + HCl
a. What are the peculiarities of first two reactions
b. Conduct an experiment for viewing the dissociation and association taking place in the third equation.
c. In the three reactions, reactants turned into product and products are converted into reactants, is it true?
d. What type of reactions are they all represent?
e. Write down the characteristics of the reaction.