Question

a 16g metal piece releases 2.25*10^23 electron working as a reducing agent then equivalent weight of the metal is

Answer 1

(16×6.022×10^23)÷equivalent weight=2.25×10^23
42.823 g/mol

Answer 2

Answer : The equivalent weight of the metal is, 42.89 grams

Solution :

First we have to calculate the moles of electrons.

$\text{Moles of electrons}=\frac{\text{Mass of electrons}}{\text{Molar mass of  electrons}}=\frac{2.25\times 10^{23}}{6.022\times 10^{23}}=0.373\text{ moles of electrons}$

Now we have to calculate the equivalent weight of the metal.

As, 0.373 moles of electrons has 16 gram of metal

So, 1 moles of electrons has $\frac{16}{0.373}=42.89$ grams of metal

Therefore, the equivalent weight of the metal is, 42.89 grams