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Experiment. The aim of this experiment is to identify which substances are present in the flu medicine powder

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´╗┐Experiment A1: Qualitative Tests on Organic compounds The aim of this experiment is to identify which substances are present in the unknown white powder. This includes the compound that are said to be present and the substances that are typically found in a flu powder. The results from this test are as follows: Test for substance Observations Explanation Phenylephrine Hydrochloride test with Cu2+ +CuSO4: the solution turned into a light blue colour. +NaOH: the solution turned dark blue +Ether: the solution split into two layers; clear and dark blue at the bottom. From the observation made it is visible that unknown white powder did test positive for Phenylephrine. Up until the addition of NaOH the outcomes of the two test were similar. Despite there being a yellow precipitate at the bottom the unknown white powder does contain Phenylephrine. Unknown tested for Phenylephrine +CuSO4: solution was cloudy to begin with. ...read more.


However ascorbic acid was also tested with Cu2+. This is because the ascorbic acid in the white powder may also react with the Cu2+. However the with ascorbic acid and the unknown white powder the test had similar results. Ascorbic acid test with Cu2+ + NaOH: solution remained clear +CuSO4: solution turned green then yellow. +Heat: solution turned a muddy orange colour. Unknown tested for Lactose + NaOH: solution turned cloudy +CuSO4: solution turned green to a yellow cloudy colour +Heat: the solution turned into a light brown colour. Caffeine test with I2 + Iodine: solution turns into a clear orange colour. +Hydrochloric Acid: solution turns cloudy brown colour. The observation made for this test had different outcomes. After adding hydrochloric acid the unknown white powder behaved in a completely different way by splitting into two layers. This means that it test negative for caffeine. Unknown tested for Caffeine + Iodine: solution remains cloudy white +Hydrochloric Acid: solution split into two layers; clear and cloudy at the bottom. ...read more.


From observation made from a different group it showed that paracetamol is actually present in the unknown white powder and does test positive for this test. Unknown tested for Paracetamol +ferric chloride: solution turns brown and slight fizzing occurs The constituents of the Unknown white powder are Phenylephrine Ascorbic acid (Vitamin C) Lactose Carbonate Paracetamol Problems with the tests Through performing these different tests many errors could have occurred. As the unknown white powder contains a mixture of many different substances, when performing the tests for the different organics compounds some substances may prevent the reaction from occurring. As this test consists of using many different chemical it is also possible that cross-contamination of the chemicals may have occurred hindering the reaction for some tests. Through the qualitative test is showed that some of the substances in a typical flu powder are also found in the unknown white powder. However now it is important to find out the quantity of the substances in the unknown white powder. The following test took a more quantitative approach to find out the amount of the substances present. ...read more.

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