(c). The first ionisation energy of Cl in gaseous atom is 1251 kJ mol-1 whereas 125
the electron affinity of Cl is -349 kJ mol-1. Explain clearly the changes of
energy associated with the process by providing their balanced chemical
equations.

The answer is c fish

What do you mean by that? like the contents? the thc level?

The activity series is shown in the attached picture. if the element is below the other, then you can displace the other. following the activity series as a guide, the reactions are as follows: nickel and aluminum chloride3 ni + 2 alcl₃  → 3 nicl₂ + 2 albarium and copper bromideba + cubr  →  no reaction because cu is less oxidizable than bapotassium nitrate and aluminum3 kno₃ + al  → al(no₃)₃ + 3 ksodium phosphate and zincnaso₄ + zn  → znso₄ + na