Question

The unit charged cation is reduced to the metal by reacting with $6.022\times {10}^{21}$ electrons at a given time. The number of equivalents of ion reduced is:

• A. 0.1
• B. 0.01
• C. 0.001
• D. 0.0001

Answer 1

The correct option is B 0.01

$no.ofelectronsused=6.02\times {10}^{21}$
$\therefore molesofelectros=\frac{6.02\times {10}^{21}}{6.02\times {10}^{23}}=0.01$
the charge is unity
$\therefore Equivalentsof{e}^{-}=0.01\times 1=0.01$
$\therefore Equivalentsofion=0.01$