Question

The relation between molarity and normality is expresses as: a) M = N x g.e.w/g.m.w

Answer 1

Answer: $Molarity=Normality\times \frac{gew}{gmw}$

Explanation:

Molarity is defined as the number of moles dissolved per liter of the solution.

$Molarity=\frac{\text {moles of solute}}{\text {Volume in L}}$

${\text {moles of solute}=\frac{\text {given mass}}{\text {Molar mass}}$  

Normality is defined as the number of gram equivalents dissolved per liter of the solution.

$Normality=\frac{\text {gram equivalents of solute}}{\text {Volume in L}}$

${\text {gram equivalents of solute}}=\frac{\text {given mass}}{\text {Equivalent mass}}$

Thus $Molarity=Normality\times \frac{\text {Equivalent mass}}{\text {Molar mass}}$