Calculate the exact normality of the final resultant solution when of a solution is mixed homogeneou — Mole Concept and Some Basic Concepts of Chemistry Chemistry Question
Question
Calculate the exact normality of the final resultant solution when $30\text{ mL}$ of a $1\text{ N } H_2SO_4$ solution is mixed homogeneously with $20\text{ mL}$ of a $4\text{ N } H_2SO_4$ solution.
💡 Solution & Explanation
Step 1: Apply the mixing formula for solutions containing the same solute. $N_{\text{final}} = \frac{N_1V_1 + N_2V_2}{V_1 + V_2}$. Step 2: Calculate total milliequivalents of the acid. Total meq = $(30\text{ mL} \times 1\text{ N}) + (20\text{ mL} \times 4\text{ N}) = 30 + 80 = 110\text{ meq}$. Step 3: Calculate the total final volume. Total volume = $30\text{ mL} + 20\text{ mL} = 50\text{ mL}$. Step 4: Calculate the final normality. $N_{\text{final}} = \frac{110\text{ meq}}{50\text{ mL}} = 2.2\text{ N}$.