ipl-logo

Melting Point Lab

447 Words2 Pages

In this lab, my lab group was able to test and verify all the parts of alum through a series of tests. We also were able to conclude whether or not the substance was alum after all. The testing of the alum, AlK(SO4)2, was able to conclude the melting point of alum, to determine whether sulfate was present in alum, and the water of hydration in the alum crystals. The melting point of alum was measured to be 92.5℃. This was tested by taking the alum and crushing it into a powder which was put into a capillary tube. The capillary tube was conjoined with a thermometer and heated. Once all of the alum disappeared from the capillary tube we recorded the temperature. On our first trial we recorded 100℃ Our second trial measured at 96C. The alum has a literature melting point at 92.5℃ so our results were in a fair range to assume our results were correct. …show more content…

To find my lab group’s ratio we took the leftover alum and placed it into a crucible and heated the crucible to figure out how much water had evaporated. We could use this later to determine the ratio. Before the crucible was heated, the mass we recorded of the crucible, cover, and alum crystals was 23.02g. Once the alum was heated everything was weighed again. We recorded that 22.34g was the new mass. This means that the mass of the anhydrous, AlK(SO4)2, was 0.75g and the water driven off was 0.68g. When my lab partners and I used these measurements for our calculations we got the ratio of 1:13. This ration is clearly accurate because the actual ration is

Show More
Related

6.03 Identity Lab Report

363 Words | 2 Pages

The purpose of this lab was to be able to use physical characteristics to determine the identity of an unknown compound. The data from this experiment classified aluminum as metallic; ascorbic acid, paraffin, palmitic acid, sucrose, graphite, and water as molecular; sodium chloride as ionic. In order to determine this, 3 tests were conducted. The first test was to test the conductivity of each substance at room temperature. In this test, only graphite and aluminum conducted.

Read More

Alka-Seltzer Experiment

853 Words | 4 Pages

In the second portion of this experiment we will keep the temperature constant and divide the ½ tablet of Alka- Seltzer into 2 pieces ,3 pieces and an unbroken ½ tablet. It is my belief that Alka-Seltzer

Read More

Millsaps College Lab Manual

1232 Words | 5 Pages

METHOD: The following procedure was taken from the 2017 Millsaps College lab manual.1 The experiment was split into two parts, part A and part B. Part A was to find the heat capacity while part B determined the specific heat of an unknown metal. This was the final goal of the lab. To start, a temperature probe had to be connected to a LabQuest2 data collection device. 100.0 mL of deionized had to be added into a Styrofoam cup.

Read More

Aluminum Synthesis Lab Report

1073 Words | 5 Pages

Once the material was acquired, 1.0094 grams of Aluminum were weighed and then transferred to a 250mL beaker. The 250mL beaker continued to remain in use for the next few steps. 1.4M KOH solution was added to the Aluminum sample that was previously obtained. For gas to escape the lab, there was a fume

Read More

Alka Seltzer Temperature Experiment Results

101 Words | 1 Pages

If I had a chance to do this experiment once again. I would improve this experiment by actually testing, whether temperature affects the rate of reaction of the alka seltzer tablet, by having the water be hot, warm and cold, and determine at which temperate does the tablet dissolve faster. I could also change the amount of water I used during the experiment, as I only used 100ml of water in a 400ml beaker. I would also change the temperate of the room. A further investigation can study how temperature affects the rate of reaction between water and alka seltzer tablets.

Read More

Stoichiometry Lab

563 Words | 3 Pages

Stoichiometry is a method used in chemistry that involves using relationships between reactants and products in a chemical reaction, to determine a desired quantitative data. The purpose of the lab was to devise a method to determine the percent composition of NaHCO3 in an unknown mixture of compounds NaHCO3 and Na2CO. Heating the mixture of these two compounds will cause a decomposition reaction. Solid NaHCO3 chemically decomposes into gaseous carbon dioxide and water, via the following reaction: 2NaHCO3(s) Na2CO3(s) + H2O(g) + CO2(g). The decomposition reaction was performed in a crucible and heated with a Bunsen burner.

Read More

Snapthene Lab Report

699 Words | 3 Pages

Our recrystallized vanillin was the same as the literature melting range of the pure vanillin. Lab #1 Post

Read More

Specific Heat Lab Report

1160 Words | 5 Pages

It is very possible, since all of the components were found that were necessary to use the formula and the date proves that. The data above supports the claim that the specific heat was found by using the formula. The specific heat was 0.345J/g℃ for the iron. Errors could have occurred, such as the thermometer wasn’t left in the calorimeter long enough, which would mean that the final temperature of the water and the metal would be different, which would then mean that there would be a different result for the specific heat of the metal. Another error that could have occurred would be if the metal wasn’t transferred from the boiling water to the calorimetry with the room temperature water quick enough then the metal could have lost heat from the outside environment.

Read More

Chemical Weathering Lab Report

524 Words | 3 Pages

The 50% vinegar caused a decrease in the mass of the rock by 1.9 grams. This result was expected as stated in the hypothesis. The distilled water did not cause a change in mass at all for the rock, making it the solution that caused the least amount of chemical weathering. The 10% vinegar did in fact cause less chemical weathering than the 50% vinegar, with a change in mass of 0.1 g. Although it was hypothesized that the soda water would cause less chemical weathering than both the 10% and 50% vinegar solutions, it actually caused the same change in mass as the 10% vinegar at a loss of 0.1

Read More

Nacl Mixture And Freezing Point Lab Results

848 Words | 4 Pages

After the data from our lab came out opposite of what is scientifically supported it was clear there were better, more relevant ways of measuring different salts ability to melt Ice (lower the freezing point) than time, which is what we used. Also, the Ice being crushed may have caused an additional error because it disrupted the distribution of salt throughout the ice. If this lab were to be performed again I suggest placing the salt on a block of ice, because the amount of Ice exposed to the sat would be less varied between tests than with crushed

Read More

Mass And Mole Relationships In A Chemical Reaction

949 Words | 4 Pages

I. Title: Mass and Mole Relationships in a Chemical Reaction II. Background: Percent yield is the ratio of actual yield to theoretical yield. Amount in percent of one product formed in chemical reaction. Actual yield is the information found is experiments or is given.

Read More

Calorimetry Lab Report

747 Words | 3 Pages

I. Introduction This experiment uses calorimetry to measure the specific heat of a metal. Calorimetry is used to observe and measure heat flow between two substances. The heat flow is measured as it travels from a higher temperature to a lower one. Specific heat is an amount of heat required to raise the temperature of one gram of anything one degree Celsius. Specific heat is calculated using several equations using the base equation: q=mc∆T II.

Read More

Personal Narrative: Aluminum

676 Words | 3 Pages

Next the bauxite has to be turned into alumina which can be separated from the bauxite by using a hot solution, normally a solution of lime and caustic soda. The solution with the bauxite is then heated and filtered until all the alumina has been filtered from the bauxite, it is then dried. The next step is to process the alumina into aluminum. There are 3 parts in making aluminum; electricity, carbon, and aluminum oxide. They use electricity to melt the aluminum by having the electricity react with the oxygen turning it into carbon dioxide.

Read More

Water Hydration Lab Report

603 Words | 3 Pages

In this experiment, the amount of water lost in the 0.99 gram sample of hydrated salt was 0.35 grams, meaning that 35.4% of the salt’s mass was water. The unknown salt’s percent water is closest to that of Copper (II) Sulfate Pentahydrate, or CuSO4 ⋅ 5H2O. The percent error from the accepted percent water in CuSO4 ⋅ 5H2O is 1.67%, since the calculated value came out to be 0.6 less than the accepted value of 36.0%.This lab may have had some issues or sources of error, including the possibility of insufficient heating, meaning that some water may not have evaporated, that the scale was uncalibrated, or that the evaporating dish was still hot while being measured. This would have resulted in convection currents pushing up on the plate and making it seem lighter by lifting it up

Read More

Colour And Temperature Experiment

2992 Words | 12 Pages

3. Introduction: This experiment was performed to determine whether colour has an influence on a person’s mood, blood pressure and pulse rate. People attach different meanings to different colours that may influence their emotions, blood pressure and pulse rate. Different coloured lights; blue, green, red, yellow and white (neutral) were used in a dark room and the participant’s blood pressure and pulse rate was monitored and recorded on an observation sheet to determine if colour has an influence on these variables.

Read More

More about Melting Point Lab

Related Topics

Open Document