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STOICHIOMETRY AND PERCENT PURITY Many samples of …
www.kpu.caSTOICHIOMETRY AND PERCENT PURITY Many samples of chemicals are not pure. We can define percent purity as mass of pure compound in the impure sample total mass of impure sample x 100 If an impure sample of a chemical of known percent purity is used in a chemical reaction, the percent purity has to be used in stoichiometric calculations.
Tutorial 3 THE MOLE AND STOICHIOMETRY
www.eiu.eduCalculate the percent purity of the silver sulfate sample. 19) 1.52 g of aluminum reacted with excess chlorine gas to give an 83.5% yield of aluminum chloride. Calculate this mass of aluminum chloride. 20) 2.350 g of a 72.5% pure sample of aluminum sulfate was treated with excess barium