To complete and balance the equation for the single-replacement reaction between Ni and Cu(NO3)2, follow these steps:
1. Write down the unbalanced equation:
Ni + Cu(NO3)2 → ??
2. Identify the metal that is more reactive (higher on the activity series) than the other metal present. In this case, nickel (Ni) is more reactive than copper (Cu).
3. Write the balanced equation by swapping the metals and their charges:
Ni + Cu(NO3)2 → Ni(NO3)2 + Cu
4. Finally, balance the equation by ensuring that the number of atoms on both sides of the equation is equal:
Ni + Cu(NO3)2 → Ni(NO3)2 + Cu
The balanced equation for the single-replacement reaction between Ni and Cu(NO3)2 is:
Ni + Cu(NO3)2 → Ni(NO3)2 + Cu