Question

$\mathrm{N}/10\mathrm{HCl}$ solution means what?

Answer 1

Normality:

• $\mathrm{N}$ is the unit to represent the concentration of any substance in Normality.
• Normality is described as the number of gram or mole equivalents of solute present in one litre of a solution.
• $1\mathrm{N}\mathrm{of}\mathrm{a}\mathrm{substance}=\frac{\mathrm{Number}\mathrm{of}\mathrm{equivalent}\mathrm{weights}}{\mathrm{Volume}\mathrm{in}\mathrm{Litres}}$
• The equivalent weight of Sodium Chloride i.e., $\mathrm{HCl}$ is $=36.5\mathrm{gm}$
• So, $1\mathrm{N}\mathrm{HCl}$would mean $1\mathrm{gm}$ equivalent of $\mathrm{HCl}$ dissolved in $1\mathrm{L}$ solution.
• $0.1\mathrm{N}$ of $\mathrm{HCl}$ would obviously mean $0.1\mathrm{gm}$ equivalent of $\mathrm{HCl}$ dissolved in $1\mathrm{L}$ of solution.