Aim: To separate a mixture of Iron filings, CaCO3, NaCl into their pure substances. Apparatus:
•2x 150ml beakers •1x 150Ml Beaker •Magnet•Matches
•Evaporating basin•Bunsen Burner
•Retort stand•Funnel Paper
•Cling Wrap•Saftey Goggles
1.Gather Apparatus and the mixture of Iron, CaCO3 and NaCl. 2.Weigh beaker and mixture.
3.Use magnetic separation to remove Iron filings.
4.Set up retort stand and add filter paper to the filter funnel. 5.Put the rest of the mixture into the filter funnel and add water slowly to filter out the water and dissolved NaCl. 6.Evaporate the filtrate to dryness.
7.Put the CaCo3 into a dish and put on a hotplate to dry to a pure substance. 8.Once all substances are in their pure form measure.
150 Ml Beaker77.8
Beginning Mixture = 12.24g
CaCO3 = 5.09/12.24 x 100
Iron Filings = 4.83/12.24 x 100
NaCl =3.33/12.24 x 100
The procedure we undertook was not very accurate as we ended up with more than 12.24g of mixture. We ended up with 13.25g. The method showed errors as we may not have measured correctly or undertook the right method to separate the substances. These affected the results as the results are then inaccurate. To improve accuracy and reduce errors we could improve the method by making sure to measure properly to get accurate results. We could also repeat the experiment to see where the errors occurred.