Enthalpy – Displacement

Enthalpy – Displacement

In this chemistry experiment, we aim to determine the enthalpy change for the displacement reaction between zinc and copper sulfate solution. By measuring the temperature change over a period of time and using calculations, we can obtain the enthalpy change and thermochemical equation for the reaction. The procedure involves adding excess zinc powder to the solution and recording the temperature every 30 seconds for 8 minutes. We also discuss how to calculate the percentage error and possible reasons for differences between the experimental and accepted values. This experiment is a great opportunity to learn about enthalpy, displacement reactions, and thermochemistry in practice.

Titration – Redox

Titration – Redox

In chemistry, balancing equations is crucial to understanding the stoichiometry of a reaction. In this experiment, you will learn how to balance the equation for the reaction between sodium thiosulphate and iodine using titration with starch indicator. By determining the stoichiometric coefficients, you can gain insight into the reactants and products involved in the chemical equation. This experiment provides a great opportunity to improve your titration skills and interpretation of results.

Titration Acid-Base

Titration Acid-Base

In this experiment, we aim to determine the concentration of a solution of sodium hydroxide by titration against a standard solution of potassium hydrogen phthalate. We will use phenolphthalein as an indicator to show when the reaction is complete. To perform the titration, we will need a burette, pipette, conical flask, sodium hydroxide solution, and potassium hydrogen phthalate solution, among other requirements. We will also need to ensure accuracy by recording burette readings to the nearest 0.05 cm3 and repeating titrations until they agree within 0.10 cm3. Finally, we will analyze the effects of various errors on the calculated value of the concentration of sodium hydroxide and discuss the reasons for using a colourless to pink solution for titration.

Making a standard solution

Making a standard solution

In the world of laboratory work, accuracy is key. A primary standard like potassium hydrogen phthalate can help ensure that measurements are precise and reliable. By preparing a standard solution of this compound and using it in volumetric analysis, researchers can obtain accurate concentration measurements that are essential for a wide range of experiments. This article discusses the process of making a standard solution of potassium hydrogenphthalate, the importance of using primary standards, and the benefits of using volumetric analysis in the lab.

Identification of Unknown Substances: Classifying Metallic, Ionic, or Covalent Compounds

Identification of Unknown Substances: Classifying Metallic, Ionic, or Covalent Compounds

Dive into the world of chemistry with this exciting experiment designed to classify unknown substances as metallic, ionic, or covalent compounds. Utilize various tests to examine properties such as appearance, boiling point, conductivity, solubility, and reaction with hydrochloric acid. By the end of this experiment, you'll have a better understanding of the properties and characteristics of different substance types, ultimately enhancing your knowledge of the chemical world around you.

Equilibria – Changes in Concentration with Detailed Chemical Reactions

Equilibria – Changes in Concentration with Detailed Chemical Reactions

Dive into the intriguing realm of chemical equilibria with our hands-on experiment that explores the effects of concentration changes on equilibrium positions. Learn how Le Chatelier's principle comes into play when stresses are applied to a system in equilibrium, and witness the fascinating color changes that occur as a result. This engaging experiment provides valuable insights into the principles governing chemical reactions and dynamic equilibrium, while sparking curiosity and fostering a deeper understanding of chemistry.