CHE143 Organic And Analytical Chemistry UITM Assignment Sample Malaysia

CHE143 Organic And Analytical Chemistry course at UITM (Universiti Teknologi MARA), we will embark on a journey of discovery and exploration into the fascinating realm of organic compounds and the analytical techniques used to study them. Organic chemistry is the study of the structure, properties, composition, reactions, and synthesis of carbon-based compounds. It plays a crucial role in various scientific disciplines, including pharmaceuticals, materials science, biochemistry, and environmental science. Understanding organic chemistry is essential for students pursuing careers in chemistry, biology, medicine, and related fields.

Throughout this course, we will delve into the fundamental principles of organic chemistry, starting from the basics of chemical bonding and molecular structure. We will explore the various classes of organic compounds, such as alkanes, alkenes, alkynes, aromatic compounds, and functional groups, and learn about their physical and chemical properties. Additionally, we will investigate the mechanisms of organic reactions and the methods used to analyse and characterise organic compounds.

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In this segment, we will discuss some assignment outlines. These are:

Assignment Outline 1: Apply common nomenclature system of various organic compounds structure.

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Assignment Outline 2: Analyse experimental data from an instrumental quantitative analysis.

To properly analyze experimental data from instrumental quantitative analysis, it is necessary to follow a systematic approach. Here’s a general outline of the steps involved in analyzing such data:

  1. Data Examination:
    • Begin by examining the raw data obtained from the instrumental analysis. Check for any obvious errors, outliers, or inconsistencies. Ensure that the data is complete and correctly recorded.
  2. Data Preprocessing:
    • If required, perform data preprocessing steps such as data normalization, outlier removal, or data transformation. This is done to enhance the quality and reliability of the data for further analysis.
  3. Statistical Analysis:
    • Apply appropriate statistical techniques to analyze the data. This may involve calculating basic statistical parameters such as mean, median, standard deviation, range, or variance. These measures provide a summary of the data distribution and help in understanding the central tendency and variability of the results.
  4. Calibration Curve:
    • In many instrumental quantitative analyses, a calibration curve is constructed using known standard solutions with different concentrations. Plot the calibration curve using the instrument response (e.g., peak area, absorbance) versus the corresponding concentrations. Fit a suitable mathematical model to the calibration curve to determine the relationship between the instrument response and the analyte concentration.
  5. Analyte Concentration Calculation:
    • Use the calibration curve obtained in the previous step to calculate the concentration of the analyte in the unknown samples. Apply the mathematical model or interpolation techniques to determine the analyte concentration based on the instrument response obtained from the unknown samples.
  6. Quality Control:
    • Assess the quality of the data and the accuracy of the results. This may involve performing statistical tests, such as analysis of variance (ANOVA), to evaluate the precision and accuracy of the measurements. Additionally, check if the results meet any predefined acceptance criteria or regulatory requirements.
  7. Error Analysis:
    • Analyze the sources of error in the experimental data. This can include instrumental errors, sample preparation errors, or human errors. Identify and quantify these errors to determine their impact on the final results.
  8. Data Visualization:
    • Present the results in a clear and meaningful manner using appropriate data visualization techniques. This may include creating plots, graphs, or charts to illustrate trends, patterns, or relationships in the data.
  9. Interpretation:
    • Interpret the results based on the objectives of the analysis. Relate the findings to the research question or hypothesis being investigated. Discuss any significant observations, trends, or deviations from expected results.
  10. Conclusion:
  • Summarise the key findings from the analysis and draw conclusions based on the results obtained. Highlight any limitations or areas for further investigation.

Remember, the specific analysis techniques and steps may vary depending on the nature of the instrumental technique used and the analytical method employed. It is crucial to consult relevant literature, method protocols, and expert advice when conducting a detailed analysis of experimental data from instrumental quantitative analysis.

Assignment Outline 3: Evaluate chemical reaction mechanisms of organic compounds upon their functional group and properties.

Chemical reaction mechanisms of organic compounds are influenced by their functional groups and properties. Functional groups are specific groups of atoms within a molecule that determine its chemical reactivity. The properties of organic compounds, such as steric effects, electronic effects, and acidity/basicity, also play a crucial role in determining the reaction mechanisms. Here’s an evaluation of how functional groups and properties can impact the reaction mechanisms:

  1. Alkanes: Alkanes are generally unreactive due to the strong carbon-carbon and carbon-hydrogen bonds. However, under certain conditions, such as high temperature or in the presence of a catalyst, they can undergo reactions like combustion and halogenation.
  2. Alkenes: The presence of a carbon-carbon double bond makes alkenes more reactive than alkanes. They readily undergo addition reactions, such as hydrogenation, halogenation, and hydration, where a molecule adds across the double bond.
  3. Alkynes: Alkynes contain a carbon-carbon triple bond, which imparts higher reactivity compared to alkenes. They can undergo similar addition reactions as alkenes but may also participate in acetylide anion formation and subsequent nucleophilic addition reactions.
  4. Alcohols: Alcohols possess the hydroxyl functional group (-OH), which makes them capable of participating in various reactions. They can undergo dehydration to form alkenes, oxidation to form aldehydes, ketones, or carboxylic acids, and substitution reactions with strong acids or leaving groups.
  5. Carbonyl Compounds: Carbonyl compounds, such as aldehydes, ketones, and carboxylic acids, exhibit high reactivity due to the polarized carbon-oxygen double bond. They undergo nucleophilic addition reactions, condensation reactions, and various oxidation/reduction reactions.
  6. Amines: Amines contain a nitrogen atom bonded to carbon atoms. They can act as nucleophiles and undergo substitution reactions with alkyl halides or acyl halides. Additionally, they can participate in acid-base reactions due to their basic nature.
  7. Carboxylic Acids: Carboxylic acids contain both a carbonyl group and a hydroxyl group. They can undergo various reactions, such as esterification, amidation, decarboxylation, and salt formation with bases.
  8. Ethers: Ethers have an oxygen atom bonded to two carbon atoms. They are relatively unreactive and are often used as solvents. However, under certain conditions, ethers can be cleaved by strong acids or oxidizing agents.
  9. Aromatic Compounds: Aromatic compounds, such as benzene and its derivatives, exhibit unique reactivity due to the delocalized pi-electron system. They undergo electrophilic aromatic substitution reactions, where an electrophile substitutes a hydrogen atom on the aromatic ring.
  10. Halides: Organic compounds containing halogens (fluorine, chlorine, bromine, iodine) can undergo nucleophilic substitution reactions. The reactivity depends on the halogen and the nature of the substituents.

In addition to functional groups, various properties of organic compounds, such as steric hindrance, electronic effects (inductive and resonance effects), and acidity/basicity, influence reaction mechanisms. For example, steric hindrance can affect the accessibility of a reactive site, electronic effects can determine the polarity and reactivity of a molecule, and acidity/basicity can influence proton transfer or nucleophilic reactions.

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