A-LevelChemistryAnalytical techniquesMay/June 2017Paper 3 Q116 Marks
Sodium hydrogencarbonate, NaHCO3, is used as baking soda in cooking. Baking soda may also contain small amounts of other chemicals. In this experiment, you will determine the percentage purity by mass of an impure sample of NaHCO3 by titration with sulfuric acid. FA 1 is 0.0500 mol dm⁻³ sulfuric acid, H2SO4. FA 2 is impure NaHCO3. methyl orange
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