Question

Equivalent weight of Ferric ion is (At wt of Fe=56)
14
O A. 56
O B.
28
O c. 18.67
O D.
32​

Answer 1

Answer:

C. 18.67

Explanation:

Equivalent weight is defined as mass of a chemical entity that would react with or release 8 g oxygen or 1 g hydrogen or 22 g carbon or 35.5 g of chlorine.

How to calculate equivalent weight :-

Equivalent weight = $\dfrac{molar\:mass}{n-factor}$.

• N-factor of an acid is its basicity.

• N-factor of a base is its acidity.

• N-factor of an ion is equal to equivalent charge. For example, n-factor of $Ca^{2+}$ is 2.

Now,ferric ion is $Fe^{3+}$. Therefore,it's n-factor is 3. Hence, we can calculate it's equivalent mass as $\dfrac{molar\:mass}{3}$.

= $\dfrac{56}{3}$

= 18.67 gram per equivalent.