How many moles of HCI are needed to produce 25 moles of KCI in the presence of excess potassium permanganate? A. 16
B. 32
C.5
D.200​

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

Your question is not clear but if you can explain yourself i would be glad to .  just trying to : ))