Predict which of the following reactions will occur? i. Ni(s) + FeCl₂(aq) → NiCl₂(aq) + Fe(s)
Ii. 2Al(s) + 3NiCl₂(aq) → 2AlCl₃(aq) + 3Ni(s)
Iii. Fe(s) + CuCl₂(aq) → FeCl₂(aq) + Cu(s)

Question

Predict which of the following reactions will occur? i. Ni(s)+ FeCl₂(aq)→ NiCl₂(aq)+ Fe(s) Ii. 2Al(s)+ 3NiCl₂(aq)→ 2AlCl₃(aq)+ 3Ni(s) Iii. Fe(s)+ CuCl₂(aq)→ FeCl₂(aq)+ Cu(s)

Quizplus · Accepted Answer

To predict if a reaction will occur, we can refer to the activity series of metals. Metals higher in the series will displace metals lower in the series from their compounds in solution. Nickel (Ni) is less reactive than Iron (Fe), so reaction i will not occur. Aluminum (Al) is more reactive than Nickel (Ni), so reaction ii will occur. Iron (Fe) is more reactive than Copper (Cu), so reaction iii will also occur.

Predict Which of the Following Reactions Will Occur? I