Given that: S(s) + O2(g) --> SO2(g); ΔH = -296.8 kJ/mol
2 SO3(g) --> 2 SO2(g) + O2(g); ΔH = +197.8 kJ/mol

Determine the enthalpy change of the reaction: 2 S(s) + 3 O2(g) --> 2 SO3(g)

Rn in the right answer

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