Question

How to calculate the equivalent weight of MgCO3

Answer 1

The molar mass of MgCo3 is 84.3139 g

Answer 2

Answer : The equivalent weight of $MgCO_3$ is, 42 g/eq

Explanation :

First we have to calculate the molar mass of magnesium carbonate.

The molar mass of magnesium carbonate, $MgCO_3$ = 24 + 12 + 3(16) = 84 g/mole

Now we have to calculate the equivalent weight of $MgCO_3$

Formula used :

$\text{Equivalent weight of }MgCO_3=\frac{\text{Molar mass of }MgCO_3}{\text{Charge present on ionic form}}$

As the salt $MgCO_3$ ionizes to form $Mg^{2+}$ and $CO_3^{2-}$. So, the charge present on both  ions is 2.

Now put all the given values in the above formula, we get :

$\text{Equivalent weight of }MgCO_3=\frac{84g/mole}{2}=42g/eq$

Therefore, the equivalent weight of $MgCO_3$ is, 42 g/eq