Calculate the mass percentage of aspirin(C 9 H 8 O 4 ) in acetonitrile(CH 3 CN) when 6.5 g of C 9 H 8 O 4 is dissolved in 450 g of CH 3 CN.

Question

Philoid · Accepted Answer

Total mass of solution = 6.5g + 450g = 456.5g

Therefore mass percentage of aspirin in solution = (mass of aspirine/total mass of solution) = 6.5/456.5

⇒ mass % of aspirine = 1.424%