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Determination of the purity of Sodium Carbonate
Member rating: No Rating | Words: 1168 | Submitted: Thu Apr 17 2008
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Determination of the purity of Sodium Carbonate Aim: To determine the percentage purity of a sample of sodium carbonate. Equation: Na2CO3 + 2HCl --> 2NaCl + H20 + CO2 Sodium Hydrochloric Sodium Water Carbon Carbonate Acid Chloride Dioxide Chemicals: * 4.00 g dm-3 of impure Sodium Carbonate in solution * 1.00 mol dm-3 Hydrochloric acid Apparatus: * 50cm3 burette burette clamp and stand * 25cm3 bulb pipette pipette pump * Teat pipette * Conical flask white tile * 250cm3 graduated flask * 1 beaker for waste funnel * Methyl Orange indicator * Distilled water Method: To determine the percentage purity of a sample of impure sodium carbonate we must first find out how much, in volume, hydrochloric acid it takes to neutralise the solution (this is an acid and base titration and will need an indicator). To do this I will need to adhere to the following method; 1. Clamp the burette carefully. Fill the burette with the hydrochloric acid using the funnel. Remove the air space below the tap and use the wastage beaker to catch any of the...
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