Syringe Test Experiment :: Papers

Syringe Test Experiment Formula Word: - Calcium Carbonate + Hydrochloric acid = Calcium Chloride + Water + Carbon Dioxide Symbol: - CaCOà Ã‚ · + 2HC = CaCl + H 0 + CO Equipment: - Flask, Glass gas syringe, Bung, Marble chips (Calcium Carbonate (CaCOà Ã‚ ·)) and tubing. Safety Because of the dangerous chemical that will be handled goggles should be wore during the experiment in case any should get in your eyes while the chemical is being measured and the experiment is happening. Fair test  § The amount of hydrochloric acid is the same (20ml) for every experiment using more or less of it in each one would highly affect it making the results erroneous and useless.  § The same amount of marble chips is used (2gs) for every experiment if the amount was too varied the results would be unusable.  § The test was repeated two times to ensure fair and accurate results from averaging.  § Washing each apparatus that I use so that there is no pass over of acid or other substance. Plan  § Starting with a 0.25 molar.  § Fill a flask with 5cm ³ 1 molar hydrochloric acid and 15cm ³ of distilled water this will reduce the molar to 0.25.  § The Tubing should be attached to the gas syringe and the other end put in a bung which will be eventually be inserted in the lid of the flask (fig 1).  § At the last second before the bung in put on top the marble chips (2gs) should be put in to the 2.5 hydrochloric acid so to catch the full about of gas given off and the.  § The temperature should be checked every 20 seconds over 200 seconds.  § To ensure for accurate results the test should be repeated multiple times the more times it's done the more accurate the results will be.  § Finally you should gradually change the molar from 0.25 to 2 (0.25, 0.5, 0.75, 1, 2) [IMAGE]