Answer:
Zn + CuCl₂ → ZnCl₂ + Cu
Br₂ + 2KI → 2KBr + I₂
Step-by-step explanation:
Single replacement:
It is the reaction in which one elements replace the other element in compound.
General reaction:
AB + C → AC + B
Example:
Zn + CuCl₂ → ZnCl₂ + Cu
Zinc is more reactive than copper. It displaces the copper from chloride and itself react with chlorine and form ZnCl₂.
Br₂ + 2KI → 2KBr + I₂
Bromine is more reactive than iodine. It displaces the iodine from potassium and get react with potassium and form potassium bromide.