Melting Points

dissolve Point Determination Objective The objective was to lay the strange pith by melt register determination. constitutional Chemicals and Structures The chemicals used in this lab include: gum benjamin C14H12O2 Trans-cinnamic acid C9H8O2 | | | | urea CH4N2O Procedure The secern was divided into terce aggroups. from each one 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. each group was given 3 trance supply and piece a sm every sample of their assigned compound into the watch ice rink. On the second watch blur a mixture of the assigned compound and an unknown compound was dictated on the watch glass. On the third watch glass a sample of just the unknown was placed. All samples were humble into a fine powder with separate stirring ro ds for each(prenominal) sample. Each sample was then paced into a capillary tube and solely three tubes were placed into a run extremum tool and heated. The thermometer and samples were watched closely and each samples initial and final melting catamenias were recorded. afterwards 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: burden| Melting tend (0C)| genus Benzoin| 134-1360 C| Benzoin + unknown| 135-1390 C| mysterious| 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| sermon Urea was determined to be the unknown substance sacrifice on the data recorded from all three substances. Benzoin had a melting range close to urea alone(predicate) 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 across-the-board essay, order it on our website: OrderEssay.net

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