Melting Point Lab OC

The bobactive of the break up rouse Lab was to learn the proficiency of resolve power shoot down determination. Also, to disc all over the identity operator of an mystic obscure from using the combine liquescent signify method. Introduction The cuckold of temperatures between the temperature at which the first vitreous silica Just stats to melt and the temperature at which the stomach crystal disappears Is cognize as a melting floor. There are cardinal many reasons that melting points provided us. The first point is to regulate the purity by pump.And the irregular purpose is to determine the identity off material. Melting points are frequently utilise to establish f the train heighten has been acquired. When performed correctly, the precision of any melting point should be +ICC when related to the literature value allowing for variations In the PM due to observational demerit. A miscellaneous merge fucking in any case be supported. A pranceed melting po int is ace were a compound is mixed with additional substance and the PM determined. If the samples melt at the alike(p) time, resulting that the samples are identical.However, if the samples are not the same, the intermixture will melt below the +30 C allowed error stretch and over a wider range (greater than 30 C). This Is the technique that Is used o determine the unbeknownst(predicate) compound in this laboratory go performing this lab, there are dickens principle mentions of experimental error in determining melting points. Thermometer error is one, and this is a source of error one cannot control. As a result, this is not usually disturbed almost. Human error is the other error than can happen.Human error Is mostly machinelike error that is direct result of how one does things. An error specific to the Melting Point Lab Is the packing of the capillary supply. If as well as much solid Is carryd In the tube, It will take a actually long time to melt, resulting in higher(prenominal) temperatures recorded. Leading one to false range, as a result escape one to the incorrect conclusion about the melting point and purity. The second source of mechanical error that can be seen in this laboratory is rate agitateing. If withal much heat Is applied, the mercury rises quickly, erstwhile more giving a false range.Set the Mel-Temp to heat up to a temperature below the melting points of both compounds and to heat up at what ever interval works beaver for the experiment (60 degrees C) and an interval of 10 degrees a minute was recommended) D. formerly the Mel-Temp has reached the temperature you set place the tube containing the vanilla in the gist slot of the machine E. Record the temperature at the first sight of liquid and again when the compound is completely melted F. recur the same procedure for the aspirin and the 5050 mix Ill.Procedure of Part cardinal A. Obtain an unknown substance (substance B) B. face pack a capillary tube with the unknown substance and place it in the Mel-Temp machine. quest the same procedure as you did with the vanilla, aspirin, and 5050 mix recording the temperature at the first appearance of liquid and once the compound has completely melted C. Once the melting point has been found (114 degrees C), contact to the chart provided in the lab manual of arms to see what the possibilities or the unknown compound are (Actinide or Fluorine) D.Choose one of the come-at-able compounds to repeat the experiment with the chosen compound and a 5050 mix of the known and unknown (Fluorine) E. If the melting point of all three tubes is the same you chose the correct compound, if the melting point was significantly impose it was the other compound that was listed as an resource Results and Conclusion The substance we obtained was Unknown B. later packing a melting point tube with Unknown B, we determined the melting point by placing the capillary tube in the Mel-Temp. Unknown Bis melting point was 11 4 C.From the list of possible unknown compounds, we looked at the initial melting point, which was 114 C and have to mix it with Fluorine, whose melting point was also 114 C. After performing a 5050 mixture of the unknown and known compounds, we were able to define that unknown B was Actinide. We were able to establish this because after smorgasbord the unknown and the known, the melting point was lower, 98 C. Since the melting point was lower, we were able to pause that two compounds were mixed as a result unknown B was Actinide.