Melting point

experiment one, are determining the melting points of different crystalline substances following a specific procedure. By finding the melting point of a crystalline substance, it helps determine what kind of compound it is as well as initiate the purity. A DigiMelt apparatus can be used to determine the melting point where a small amount of the the substance is packed into a capillary tube and heated slowly in the apparatus which includes a thermometer, a heating coil and a magnifying eyepiece for observing the substance. The two temperatures that need to be noted down is the first point at which liquid is formed on the crystalline substance, and second the point at which the crystalline substance turn into a clear liquid. These two…

The data from the table above indicates the melting points of pure myristic acid/trimyristin, and a 50:50 mixture of both substances. Those values can be compared to those in the literature to determine the purity of the substances, and to determine if myristic acid was synthesized. The ideal melting point of the pure trimyristin is 56-58°. The measured value of its melting point was 53-56°C. This melting point is very close to that of the literature value. The ideal melting point of the…

INTRODUCTION In my research a common idea that constantly kept appearing is the idea of sugar being sprinkled on ice cubes will apparently lower the melting point of the ice cube and shortens the time it takes to melt. Salt has always been known to have this ability of lowering freezing point of ice. Salt is usually sprinkled on icy roads to prevent slippery roads for the safety of vehicles. In my experiment I am hoping to see sugar do the same thing as salt or possibly more efficiently? So I…

The melting point of a substance is best described as the temperature at which a solid becomes a liquid (Bruice 2014). On the molecular level, when a compound melts the forces between the molecules become weaker. This is because when a substances heats up the kinetic energy between the molecules increase causing the molecules to vibrate. When the vibrations become strong enough for the molecules to move around and pass other molecules, the compound that is being heated up starts to melt and…

Abstract: The melting point ranges for the substances Tartaric Acid, Acetaminophen, and Phenacetin, which are in powder form and white in color, was found and compared to their literature values to find their purity. The melting point range of a 9:1 mixture of Phenacetin and Tartaric acid was later found to show the effect an impure substance has on temperature. Melting point range for unknown three that was lastly tested was matched to Acetaminophen by comparing their melting points.…

Post-lab: Recrystallization of benzoic acid Calculations: I initially poured 1.10 grams of impure acid into my flask. After the experiment was done, I had 0.54 grams of pure benzoic acid. This gives a difference of 1.10-0.54=0.56 g and a percentage of (0.54/1.10)*100=49.09% The true melting point of pure benzoic acid is 122.41°C and I received 126.9°C as my melting point. This gives a difference of 126.9°C-122.41°C=4.49°C and a percentage of (122.41/126.9)*100=96.46% Results: Impure benzoic…

What do you think melts ice fastest? What makes black ice melt the fastest? This question is very important, because it best asks how to melt ice fast. It is important to melt ice fast because 60% of car crashes are caused by black ice, so it is important people melt this black ice. Based on research, the heater will melt ice the fastest. The three topics being researched in this essay are, What is the freezing point of water? What is the temperature of your hand? Is ice dense or light? Why…

freezing point and salt. Like what is freezing point and what does this affects. Also what would happen if you put salt in ice water if there is a effect to the ice and water. This paper will give background about basic chemistry of salt. Also it will give you some background on ice cream. How ice could effect ice cream. Water has the freezing point of 0 degrees Celsius. If you put a ice cube in water the rate of freezing and melting aren't changing. If you add something to that mixture of ice…

Conclusion: After observing the evidence that we received from this experiment it is clear that the results thoroughly support my hypothesis. Within my hypothesis I had stated that the melting order from first to last was, as follows, paraffin, glucose, sucrose, and finally, salt. The results that we gathered supported this exact hypothesis. The first substance to melt was indeed paraffin and the second was glucose, and then sucrose and finally salt. The results are supported by the basic…

A important tests were performed on the product to pressure the results: melting point value, percent yield, IR, and TLC. The experimental melting point value was found to be a range of 165-167 ºC being a little lower than the literature value for camphor, the intended product, was 175 ºC. The sharp range was resulted in a slightly pure product. The percent yield was lower than expected which can be the reason most of the product was lost during the extraction and almost completely sublimated…