Calculate the molarity of a aqueous solution of having a density of . — Solutions and Colligative Properties Chemistry Question
Question
Calculate the molarity of a $98\% \text{ (w/w)}$ aqueous solution of $H_2SO_4$ having a density of $1.8\text{ g mL}^{-1}$.
Answer: B
💡 Solution & Explanation
The direct formula relating mass percent and density to molarity is $M = \frac{\% (w/w) \times d \times 10}{M_w}$. Therefore, $M = \frac{98 \times 1.8 \times 10}{98} = 18\text{ M}$.
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