Question:
Calculate the mass percentage of benzene if 22 g of benzene is dissolved in 122 g of carbon tetrachloride.
Calculate the mass percentage of benzene if 22 g of benzene is dissolved in 122 g of carbon tetrachloride.
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Always add solute and solvent masses to get total solution mass before calculating mass percentage.
Updated On: Apr 21, 2026
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Solution and Explanation
Given:
Mass of benzene (solute) = 22 g
Mass of carbon tetrachloride (solvent) = 122 g
Step 1: Write the Formula for Mass Percentage
Mass % of solute = (Mass of solute / Mass of solution) × 100
Step 2: Calculate the Mass of Solution
Mass of solution = Mass of solute + Mass of solvent
Mass of solution = 22 + 122 = 144 g
Step 3: Substitute in the Formula
Mass % of benzene = (22 / 144) × 100
= 0.1528 × 100
= 15.28%
Final Answer:
The mass percentage of benzene in the solution is 15.28%.
Mass of benzene (solute) = 22 g
Mass of carbon tetrachloride (solvent) = 122 g
Step 1: Write the Formula for Mass Percentage
Mass % of solute = (Mass of solute / Mass of solution) × 100
Step 2: Calculate the Mass of Solution
Mass of solution = Mass of solute + Mass of solvent
Mass of solution = 22 + 122 = 144 g
Step 3: Substitute in the Formula
Mass % of benzene = (22 / 144) × 100
= 0.1528 × 100
= 15.28%
Final Answer:
The mass percentage of benzene in the solution is 15.28%.
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