Question

What Is N/10 HCl Solution?

Answer 1

Normality:

• The number of gram equivalent mass of solute dissolved in one liter of the solution is called the normality of the solution.
• Gram equivalent mass is defined as the mass of an element (compound or ion) that combines or displaces 1.008 g hydrogen or 8 g oxygen or 35.5 g chlorine.
• So, the mathematical relation is as follows,
• $\mathrm{Normality}\left(\mathrm{N}\right)=\frac{\mathrm{Number}\mathrm{of}\mathrm{gram}\mathrm{equivalent}\mathrm{mass}}{\mathrm{Volume}\mathrm{of}\mathrm{solution}\mathrm{in}\mathrm{liter}\left(\mathrm{V}\right)}$

Explanation

• Gram-equivalent weight of HCl is one mole of $\mathrm{HCl}$ is 1.008 + 35.453 = 36.461 g
• 1N HCl means, 1g equivalent of $\mathrm{HCl}$ (Hydrochloric acid) dissolved in 1L solution.
• So $\mathrm{N}/10\mathrm{HCl}$ solution means, according to the definition of normality, $0.1g$ equivalent of $\mathrm{HCl}$ dissolved in $1\mathrm{L}$ of solution.