IOC ANS take 2

IOC ANS take 2 - Soluility Tests (Aldehyde)-#31 Water The...

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Soluility Tests (Aldehyde)-#31 Water The compound did not react with water, the molecule might be a hydrocarbon. If there is a polar functional group present then there must be more than five carbons that make the molecule less polar and therefore less water soluble. Since it is not soluble in water, it is unlikely that the compound is an organic salt. 5% HCl The compound was not soluble in HCl meaning that it is most likely not an anime. Amines and HCl react to form the amine's salt making it soluble. 5% NaOH The lack of solubility indicates that the compound is probably not a carboxylic acid, phenol, or reactive ester. For a compound not soluble in water to be soluble in NaOH, a reaction must take place such as the formation of an organic salt. This did not occur. 5% NaHCO3
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The lack of solubility indicates that the compound is probably not a carboxylic acid or a phenol.For a compound not soluble in water to be soluble in NaHCO3, a reaction must take place such as the formation of an organic salt. This did not occur. Generally, if a compound is not soluble in NaOH, there is no reason to test the solubility in NaHCO3. NaOH is the stronger base, so if a reaction was to occur, it would have happened in the presence of NaOH. Conc. H2SO4 The lack of solubility indicates that the compound does not have any lone pairs of electrons present as this are typically protonated by the strong acid. Based on the solubility tests, this compound would be a Class 8 compound which include aromatic and aliphatic hydrocarbons along with their halogen derivatives and diaryl ethers. Classification tests Since there are no classification tests for plain hydrocarbons available in IOC, the next closest class will be tested. Class 7 compounds are alcohols, aldehydes, ketones, esters, alkynes, and polyalyylbenzenez.
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2,4-DNP A test for carbonyl groups (only aldehydes and ketones). The formation of a yellow to red precipitate marks a positive test. When performed, this occured. Tollen's Test A test to differenciate between aldehydes and ketones. Aldehydes are oxydized to acids but ketones can not be. A positive result (indicating the presence of an aldehyde) is the formation of a silver mirror on the lining of the test tube. When performed, this occured. Chromic Acid A test to differenciate between aldehydes and ketones. A positive result (indicating the presence of an aldehyde or an alcohol) is the loss of a orange color and the formation of a precipitate. When performed, this occured. Derivative Tests Semicarbazone A derivative test for aldeydes and ketones. The formation of a product shows that the compound is an aldehyde or a
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ketone. The melting point of the product can be used to help differenciate the unknown compound from other's with similar boiling points.
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IOC ANS take 2 - Soluility Tests (Aldehyde)-#31 Water The...

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