How to Write a Remarkable Conclusion of a Chemistry Lab report



Some students get confused when writing their conclusion part of the chemistry lab report. They do not know what to include in a conclusion part of a lab report. Usually, conclusion paragraphs consist of aims, main findings, explanations of results, and sometimes suggestions for further study. The mentioned items should be written in paragraph forms. However, it depends on the instructions of the particular lab report. Start with restating the aim(s) of the lab report.

Subsequently summarize your findings. You expound whether the data support the hypothesis being tested or not. Explain how the experiment could be improved. Provide further directions for future studies on the same topic. A sample of a conclusion part of a chemistry lab report is provided below.

Sample of a conclusion part of a chemistry lab report:
The experiment aims at determining water of hydration and chemical formula of unknown copper chloride. The chemical formula and water of hydration of unknown copper chloride were determined by using concepts of mole ratio, conservation law of mass and proportional law. Based on these concepts, it was established that the chemical formula and water of hydration an unknown copper chloride was CuCl2. 2H2O. 

Water molecules coordinated with ionic compound (CuCl2) in ratio1:2. This ionic compound (CuCl2) requires two molecules of water to form copper chloride hydrate. When copper chloride hydrate is heated, it releases to water of hydration in the form of water vapor, leaving behind anhydrous copper chloride. Besides, when anhydrous copper chloride is dissolved in water, it coordinates with water molecules forming copper chloride hydrate (a blue solution).

When the aluminum wire is placed in a blue solution of copper, it turns colorless. This happens because aluminum is reactive than copper. As a result of this, aluminum atom displaces copper ions from chloride ions, thus forming aluminum chloride, which is a colorless solution. The present experiment could be improved by using analytical grade reagents and avoiding using contaminated apparatus. Further studies should concentrate on investigating the effects of replacing aluminum with less reactive elements on a blue solution of copper. 

Bottom line:
This experiment does not require testing of the hypothesis. For that reason, it is not incorporated in this sample. Furthermore, different chemistry lab reports have distinctive instructions. Therefore, the students should strictly follow the provided instructions by their institutions for better marks in their chemistry lab reports. You can request other parts of this lab report by leaving a comment below. Additionally, if you have not read how to write different parts of a chemistry lab report, you can read them here, Introduction part,experimental part, result section , and discussion of a chemistry lab report.

Comments

Post a Comment

Popular posts from this blog

How to write a Forensic Case Study: Murder of Junko Furuta

Image
Photo of Junko Furuta  For one to score high marks in a Forensic Case Study, one must  adhere to the following: Background of the case: This section contains details about the crime. It includes; the reasons for committing the offense, the conditions which the crime was committed, the circumstances of the crime scene and clear identification of the suspect(s) and the victim(s). One should ensure that the information in this part gives a precise idea of what the case is all about.   Pick and Write an article on Iwriter Website Evidence: This encompasses the piece of evidence found at the crime scene. The evidence should be described in details, that is, ways in which the evidence was collected, processed and preserved.   Forensic Tests: The tests should be two or more that were used to analyze the evidence. The science or theory of instrumentation used must be described fully.   Results: This consists of a detailed explanation of the forensic tests and the data inter
Read more

Roles of Sodium Carbonate when Extracting Caffeine from Tea Leaves

Image
A student failed to add sodium carbonate (Na 2 CO 3 ) when extracting caffeine from tea leaves with hot water. Though, high yield of caffeine was produced. The crystals melted at temperatures between 202  and 214 degree  Celsius. Explain. This happened because sodium carbonate did not interfere with the caffeine content of the tea leaves. Sodium carbonate (which is a base) deprotonates the phenolic hydroxyl group (-OH) (acidic) of tannins rendering them anionic. Hence, making them highly soluble in water, but parsimoniously soluble in methylene chloride. So, if sodium carbonate is not added when extracting caffeine with hot water, the extracted caffeine would also contain tannins. Additionally, sodium carbonate is added during the extraction to keep caffeine (an alkaloid which is an organic base)  in a free base form. It prevents caffeine from reacting with available acid available, which may lead to the formation cation. It reacts with a phenolic hydroxyl group
Read more

What is Hartmann Dispersion Formula?

Image
  Hartmann dispersion formula is a semi-empirical formula. It is also referred to as Cornu Hartmann formula. It relates refractive index (n) with the wavelength (λ). It is given by:  n (λ)= X + Y/( λ-Z)............................................................Equation 1  X, Y, and Z are empirical constants while n (λ) is the refractive index of a material of light of wavelength λ. The constants derived as follows: Z= [(n 1 -n 2 )/ (n 2 -n 3 ) λ 1 (λ 2 - λ 3 ) - λ 3 - λ 3 (λ 1 - λ 2 )]/ [(n1-n2)/ (n2-n3) (λ2- λ 3 )-(λ1- λ 2 )]-....................................................................................Equation 2  Y= (n 1 -n 2 )/ [1/ (λ1-Z)-(1/ (λ2-Z)…………………………Equation 3  X=n 1 -B/ (λ1-Z)…………………………………………...Equation 4  Hartmann dispersion formula is applied in the measurements of spectra wavelengths taken on a prism instruments.  Constant Z is the spectrometer optical function. In the laboratory, it usually measured by lab technicians fo
Read more