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

clear, blue and yellow precipitate at the bottom. Ascorbic Acid test with Ag++ Nitric Acid: solution turned from a white cloudy colour to yellow cloudy. + Silver Nitrate: solution turned into a dark creamy colour with silver precipitate. The purpose of testing Phenylephrine in this way is to see the reaction it has with Ag+. In this way you are able to determine whether the compound has an effect with the reaction with the unknown white powder. From the observations made the unknown powder did turn out to have similar outcomes as the test for ascorbic acid whereas the Phenylephrine behaved in a different way. Phenylephrine hydrochloride test with Ag++ Nitric Acid: solution remained clear  + Silver Nitrate: solution turned cloudy white with white precipitate. Unknown tested for Ascorbic Acid+Water: Bubbles formed + Nitric Acid: fizzing occurred + Silver Nitrate: solution turned cloudy dark grey Lactose Test with Cu2++ NaOH: solution remained clear +CuSO4: solution formed a blue precipitate +Heat: popping and solution turned dark brownFrom the observation made for this particular test it is clear that lactose is present in the unknown white powder. 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.Calcium Carbonate Test + acetic acid: solution remains cloudy +Lime water and heat: precipitate is formed +Hydrochloric acid: solution turns clear.The observations made for this test are pretty similar. At the addition of acetic acid unknown behaved differently than it should do. This could be because of another compound in the unknown powder reacting with the acetic acid.  However after the addition of hydrochloric acid both solutions turn clear. This shows that the powder tests positive. Unknown tested for carbonate + acetic acid: slight fizzing occurs+Lime water and heat : precipitate formed +Hydrochloric acid: solution turned clear.Paracetamol test with ferric chloride +ferric chloride: solution turns dark blue/ black The observations made in this test were slightly different. During this experiment some sort of error may have occurred as the result expected was not the outcome. 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 occursThe constituents of the Unknown white powder are Phenylephrine Ascorbic acid (Vitamin C)Lactose Carbonate Paracetamol Problems with the testsThrough 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.