First slide

Activity Series (OR) Electro chemicals series

Question

Correct statement among the following is

Easy

A

$Zn (s)$ can reduce ${Mg}^{2 +} (aq)$
B

$Mg (s)$ can reduce ${Na}^{+} (aq)$
C

$Fe (s)$ can reduce ${Zn}^{2 +} (aq)$
D

$Na (s)$ can reduce ${Cu}^{2 +} (aq)$

Solution

$E_{M^{+ n} / M}^{0}$ values of
Na, Mg, Zn, Fe, Cu are -2.71 V, -2.37 V, -0.76 V, -0.44 V and +0.34 V;
Metal with high negative SRP(low SRP) reduces the metal ion with low negative SRP(high SRP);
Thus sodium can reduce cupric ion from its solution;

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