In this lab, iron filings and copper sulfate pentahydrate were chemically reacted to produce iron sulfate and copper.
One of the main points of this lab is to learn the general process of a chemical reaction and the significance of the chemical equation. Through this lab, students were able to write a balanced chemical equation based on given reactants and products. After the reaction was finished and the results were recorded, students were then able to calculate the excess reactant and the limiting reactant and determine the maximum amount of copper that could be produced. With this information, percent error could then be calculated based on the actual yield and what theoretically should have been yielded.
The final results found that 2.55
I did accomplish the purpose of the lab. First, I determined the percentage of water in alum hydrate, and the percentage of water in an unknown hydrate. The results are reasonable because they are close to the example results. Second, I calculated the water of crystallization of an unknown hydrate. Furthermore, I developed the laboratory skills for analyzing a hydrate.
Everything from the kinetics of second order decomposition reactions to the electromotive force of the redox reactions in a voltaic cell. I soon discovered my interest to work in a lab setting from this class. I aspire to be part of this program to further my knowledge of the laboratory, including new procedures and
The Effect of pH on the Activity of Catalase Planning Experimental Work Secondary Resources Catalase is a type of enzyme found in different types of foods such as potatoes, apples and livers. It speeds up the disintegration of hydrogen peroxide into water because of the molecule of hydrogen peroxide (H2O2) but it remains unchanged at the end of the reaction.
The purpose of this lab was to to cycle solid copper through a series of chemical forms and return it to its original form. A specific quantity of copper undergo many types of reactions and went through its whole cycle, then returned to its solid copper to be weighted. We observed 5 chemical reactions involving copper which are: Redox reaction (which includes all chemical reactions in which atoms have their oxidation state changed), double displacement reaction, precipitation reaction, decomposition reaction, and single displacement reaction.
Gel filtration is one of the many methods that can be used for purifying proteins. Gel filtration, also known as size-exclusion chromatography, separates proteins based on size. There are pros and cons for this methods. One of the pros is that fragile proteins will not or hardly get damaged when going through the chromatography column. One of the cons is the results are not very accurate due to the proteins’ inability to adhere to the column at times.
In procedure A, one must know what an electrolytes is, which is a substance that produces an electrically conducting solution when dissolved in a polar solvent, in this case water is the solvent. Based on the results of the experiment it is can be concluded that the sodium chloride solution best conduct electricity. This is due part by ions being separated into Na+ and Cl- ions from the original NaCl. In other words NaCl(s) becomes Na+ (aq) + Cl- (aq). In doing so allows electricity to flow in the solution. As for the pure/distilled water not conducting electricity it is because it is very filtered free of minerals. Essentially, distilled water lack ions to efficiently conduct electricity, this also applies to the pure substance of sodium chloride and sucrose which lack ions, atoms that have a net negative or positive charge. However, according the results the sucrose is slightly conductive, which may suggest a possible contamination in the solution. At the end it can be reasoned that because ions were made in the NaCl solution, ions contribute to the conductivity.
== == I completed a table to show my results, here is the table: Table 1. Results of different changes of substances Part A Copper (II) Sulfate and Water Reactant description Water (reactant): Color: Colorless Transparency:
The expected moss of anhydrous copper (II) sulfate should have been .834g instead of .694g. The water lost through the heating should have been .471g instead of the .694g that was actually lost. The water lost was much larger while the mass of the anhydrous copper (II) sulfate was much smaller. If the mass of the water lost was too low than something that could have caused this is that the hydrated copper (II) sulfate was not heated correctly. Not all of the water would have been evaporated if the crucible was taken off the Bunsen burner to soon. If the mass of water lost was too large than something that could have caused this is the loss of copper (II) sulfate during the experiment. This could have occurred through the mixing of the hydrated copper (II) sulfate while it was burning on the Bunsen burner.
In this lab experiment, 0.46 grams of copper went through numerous chemical reactions, including being added to nitric acid for an oxidation-reduction reaction to occur, along with going through a precipitation reaction with sodium hydroxide, a decomposition reaction, and double displacement reaction. Theoretically, if 0.46 grams of copper was at the beginning of the reaction, after going through all of the chemical reactions, 0.46 grams should remain. However, due to some loss of copper through the chemical reactions, such as through decanting, only 0.32 grams of copper remained at the end, leaving a percent recovery of around 69.56%.
I know that when I add the iron filings to the solution the iron will
The relationship between the mass of malachite used and the amount of copper oxide obtained was proportional. Malachite and calamine are next to each other in the
LAB REPORT 1st Experiment done in class Introduction: Agarose gel electrophoresis separates molecules by their size, shape, and charge. Biomolecules such as DNA, RNA and proteins, are some examples. Buffered samples such as glycerol and glucose are loaded into a gel. An electrical current is placed across the gel.
of Copper Sulphate. To do this I plan to work out the amount of water
The Electrolysis of Copper Sulphate Aim Analyse and evaluate the quantity of Copper (Cu) metal deposited during the electrolysis of Copper Sulphate solution (CuSo4) using Copper electrodes, when certain variables were changed. Results Voltage across Concentration of solution electrode 0.5M 1.0M 2.0M 2 5.0 10.6 19.5 4 10.5 19.8 40.3 6 14.3 26.0 60.2 8 15.2 40.4 80.3 10 15.0 40.2 99.6 12 15.1 40.0 117.0 Analysing/Conclusion The input variables in this experiment are; concentration of the solution and the voltage across the electrodes. The outcome is the amount of copper gained (measured in grams) at the electrodes. By analyzing the graph, we can see the rapid increase of weight gained for the 2.0 molar concentration as the gradient is steeper.
It’s in the Statue of Liberty, found in every home, is 100% recyclable, and is called “man’s eternal metal”. Copper is everywhere. When researching copper one can get to know it personally. There’s a lot that makes up the element copper. It has its own physical appearance and physical properties along with a unique subatomic makeup and isotopes. Also, its position on the periodic table can show the amount of subatomic particles it has, its mass, and its relationship to other elements on the table.