Question

Solid nickel is added to aqueous iron nitrate. Using the metal activity series, which chemical equation reflects this reaction and its outcome? Question 5 options: A) 3Ni(NO3)2 (aq) + 2Fe (s) → NR B) Ni (s) + Fe(NO3)3 (aq) → NR C) 3Ni(NO3)2 (aq) + 2Fe (s) → 3Ni (s) + 2Fe(NO3)3 (aq) D) 3Ni (s) + 2Fe(NO3)3 (aq) → 3Ni(NO3)2 (aq) + 2Fe (s)

Answer 1

Answer:

D) 3Ni (s) + 2Fe(NO3)3 (aq) → 3Ni(NO3)2 (aq) + 2Fe (s)

Explanation:

According to the metal activity series, only a metal higher in the reactivity series will replace another. A metal can only displace metal ions listed below it in the activity series, but not above.

Iron is higher in the activity series than nickel so it will displace nickel.

The balanced chemical equation will be as follows:

3Ni (s) + 2Fe(NO₃)₃ (aq) → 3Ni(NO₃)₂ (aq) + 2Fe (s)

Hope that helps.