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General Chemistry

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Determining the Required Number of Electrons in a Redox Reaction

CHEM-9RN6OZ

Consider the following reaction:

$$Zn(s)+{Fe}^{3+}(aq)\rightarrow {Zn}^{2+}(aq)+{Fe}^{2+}(aq)$$

How many electrons will be required to completely react away $2.3\text{ g}$ of $Zn(s)$?

Note that ${N}_{A}=6.022\times {10}^{23}\frac{1}{mol}$.

A

$6.3\times {10}^{23}$

B

$8.1\times {10}^{23}$

C

$4.2\times {10}^{22}$

D

$1.4\times {10}^{24}$