reversible reactions and equilibria

Question 1

in reversible reactions the product

Answer 1

molecules can themselves react with each other or decompose and form the reactant molecules again

Question 2

a reaction can occur in both reactions:

Answer 2

the forward reaction (which forms the products) and the reverse direction (which forms the reactants)

Question 3

reverse reaction of thermal decomposition equation of ammonia chloride

Answer 3

NH4Cl (s) ⇌ NH3 (g) + HCl (g)

Question 4

reverse reaction of the dehydration of hydrated copper (II) sulfate equation

Answer 4

CuSO4.5H2O (s) ⇌ CuSO4 (s) + 5H2O (l)