0.80 g of impure chalk was reacted with 100cm of 1 mol dm hydrochloric acid (an...
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0.80 g of impure chalk was reacted with 100cm³ of 1 mol dm³ hydrochloric acid (an excess). The mixture was filtered into a volumetric flask and made-up to 250cm³. A 25.0cm³ portion of the solution required 8.5cm³ of 1 mol dm-³ sodium hydroxide solution for neutralisation. What is the percentage of calcium carbonate in the impure chalk? 0.80 g of impure chalk was reacted with 100cm³ of 1 mol dm³ hydrochloric acid (an excess). The mixture was filtered into a volumetric flask and made-up to 250cm³. A 25.0cm³ portion of the solution required 8.5cm³ of 1 mol dm-³ sodium hydroxide solution for neutralisation. What is the percentage of calcium carbonate in the impure chalk?
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