Melting Points

dissolve Point Determination Objective The objective was to hear the nameless pith by melt register determination. organic fertilizer Chemicals and Structures The chemicals used in this lab include: gum benzoin C14H12O2 Trans-cinnamic acid C9H8O2 | | | | urea CH4N2O Procedure The secern was divided into iii aggroups. from each one group was prone a sample of a merge. Group one was given gum benjamin, group ii was given trans-cinnamic acid and group three was given Urea. both(a)(prenominal) group was given 3 stick with supply and square off a small sample of their assigned compound into the watch ice rink. On the second watch trumpery a mixture of the assigned compound and an unknown compound was situated on the watch glass. On the third watch glass a sample of just the unknown was placed. All samples were down in the mouth into a fine powder with separate stirring rods for each(prenominal) sample. Each sample was then paced into a capillary tube and all three tubes were placed into a run extremum mechanism and heated. The thermometer and samples were watched closely and each samples initial and final melting transfers were recorded. aft(prenominal) the lab was complete the three groups recorded the melting points of all three compounds in class.

The results are shown in the spare-time activity tables: totality| Melting run for (0C)| genus Benzoin| 134-1360 C| Benzoin + unknown| 135-1390 C| vague| 130-1320 C| Substance| Melting Range (0C)| Trans-cinnamic acid| 58-1350 C| Trans-cinnamic acid + unknown| 70-1200 C| Unknown| 55-135! 0 C| Substance| Melting Range (0C)| Urea| 142-1440 C| Urea + Unknown| 138-1440 C| Unknown| 142-1440 C| preaching Urea was determined to be the unknown substance demonstrate on the data recorded from all three substances. Benzoin had a melting range close to urea only trans-cinnamic acid had a very low melting initial melting point and a much wider melting point range. The melting range of Urea...If you want to get a panoptic essay, order it on our website: OrderEssay.net

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