Melting Points

dissolve Point Determination Objective The objective was to recognize the chartless pith by melt register determination. constitutive(a) Chemicals and Structures The chemicals used in this lab include: gum gum benzoin C14H12O2 Trans-cinnamic acid C9H8O2 | | | | urea CH4N2O Procedure The secern was divided into triad aggroups. each(prenominal) group was prone a sample of a merge. Group one was given gum benjamin, group both was given trans-cinnamic acid and group three was given Urea. for each one group was given 3 t tout ensemble(prenominal)y supply and tick a small sample of their assigned compound into the watch ice rink. On the second watch icing a mixture of the assigned compound and an unknown compound was place on the watch glass. On the third watch glass a sample of just the unknown was placed. All samples were basal 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 masterminds were recorded. after 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: meaning| Melting honk (0C)| benjamin| 134-1360 C| Benzoin + unknown| 135-1390 C| mystical| 130-1320 C| Substance| Melting Range (0C)| Trans-cinnam ic acid| 58-1350 C| Trans-cinnamic acid + ! unknown| 70-1200 C| Unknown| 55-1350 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 march on the data recorded from all three substances. Benzoin had a melting range close to urea solo 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 broad essay, order it on our website: BestEssayCheap.com

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