Question

Calculate the mass percentage of aspirin in acetonitrile

Answer 1

Answer:

Calculate the mass percentage of aspirin (C9H8O4) in acetonitrile (CH3CN) when 6.5 g of C9H8O4 is dissolved in 450 g of CH3CN. Calculate the mass percentage of aspirin (C9H8O4) in acetonitrile (CH3CN) when 6.5 g of C9H8O4 is dissolved in 450 g of CH3CN.

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Answer 2

Mass of solution = mass of solute + mass of solvent

• 6.5 + 450
• 456.5 g

Mass % of aspirin = $\sf\frac{ mass \: of \: aspirin }{ mass \: of \: solution }$ × 100

• $\sf\frac{ 6.5 }{ 456.5 }$ × 100

• 1.424 %