Question

The following equations indicate reactions that occur spontaneously.
Fe(s) + NiCl$_2$(aq) $\rightarrow$ FeCl$_2$(aq) + Ni(s)
Zn(s) + FeCl$_2$(aq) $\rightarrow$ ZnCl$_2$(aq) + Fe(s)
Ni(s) + PbCl$_2$(aq) $\rightarrow$ NiCl$_2$(aq) + Pb(s)
Which is the increasing order of the reactivity of the metals?

• A. Fe<Ni<Zn<Pb
• B. Pb<Ni<Fe<Zn
• C. NiZn<Pb<Fe
• D. Fe<Zn<Pb

Hint:

In the reactivity series, more reactive metals displace less reactive metals from their solutions.

Answer 1

The Correct Option is B

The reactivity series shows the order of metals in terms of their ability to displace other metals from solutions. The correct order is Pb<Ni<Fe<Zn.