Titration Acid-Base (Simple)

Titration Acid-Base (Simple)

Titration is a fundamental laboratory technique used to determine the concentration of a substance in a solution. In this article, we will walk you through the steps of performing a simple acid-base titration using sodium hydroxide and hydrochloric acid. We will also discuss important safety precautions to keep in mind, such as wearing appropriate protective gear, handling chemicals with care, and disposing of waste properly. Additionally, we will address environmental concerns related to titration, including the safe disposal of chemical waste and glassware. By following these guidelines, you can perform a titration safely and responsibly while protecting yourself and the environment.

Titration – Redox Iron tablet

Titration – Redox Iron tablet

In this experiment, we explore the use of redox titration to determine the percentage by mass of iron (II) sulfate in iron tablets. By using potassium manganate in acidic solution, we can observe the permanent pink colour that indicates the end-point of the titration. With careful measurements and calculations, we can calculate the amount of iron (II) ions in the tablets and compare it with the information from the supplier. This experiment demonstrates the application of titration in analyzing the composition of drugs and supplements.

Winkler Method – Redox Titration to calculate the Biological Oxygen Demand in Water or Dissolved Oxygen Concentration.

Winkler Method – Redox Titration to calculate the Biological Oxygen Demand in Water or Dissolved Oxygen Concentration.

The Winkler method is a powerful analytical technique for measuring dissolved oxygen in water. With its ability to detect changes in temperature, it is an important tool for monitoring water quality and investigating the effects of global warming on aquatic ecosystems. This method involves several steps, including the addition of reagents that react with oxygen and the use of spectrophotometry to quantify the results. By understanding the Winkler method and its applications, we can gain valuable insights into the health of our water systems and take steps to protect them for future generations.

Calculating the Molecular mass of a gas

Calculating the Molecular mass of a gas

In this experiment, the aim is to calculate the molecular mass of butane gas using a measuring cylinder and the ideal gas equation. By filling an inverted measuring cylinder with a known mass and volume of butane gas and using either the ideal gas equation or the assumption that a mole of gas will occupy 24dm3 at rtp or 22.7dm3 at stp, the molecular mass of butane can be determined. Safety precautions must be taken while handling butane gas. The experiment provides an opportunity to calculate the number of moles of gas introduced, the molecular mass of the gas, and the density of butane at r.t.p. Calculations can be made to determine the percentage difference between the molecular mass calculated using the ideal gas equation and the molar gas volume equation.

Enthalpy – Combustion of alcohols (Determination of the heat capacity of the apparatus)

Enthalpy – Combustion of alcohols (Determination of the heat capacity of the apparatus)

In this experiment, the aim is to determine the heats of combustion of alcohols, specifically butan-1-ol. The experiment involves burning a measured mass of an alcohol in a spirit lamp and transferring the heat energy released to a calorimeter containing water. From the resulting temperature rise, the heat of combustion can be calculated. The apparatus used must be calibrated using an alcohol with a known heat of combustion due to factors such as the heat energy lost to the surrounding air and the heat capacity of the calorimeter. Safety precautions must also be taken due to the flammability and potential toxicity of the alcohols. The experiment provides an opportunity to calculate the specific heat capacity of the calorimeter and determine the enthalpy change of butan-1-ol. Calculations can be made to determine the percentage difference between experimental values and data book values and to explain why there may be a difference.

Halogen Displacement

Halogen Displacement

Halogen displacement experiments are an essential tool for studying the reactivity of halogens and their displacement reactions. In this experiment, we explore the reaction between potassium halide salts and halogen solutions, learning about reactivity, precipitates, and pH levels. By following safety measures and carefully observing the reaction, we can conduct a safe and informative chemistry experiment. This experiment is perfect for those looking to deepen their understanding of chemistry and learn about the reactivity of halogens. Through this experiment, we can gain a deeper understanding of the fundamental principles of chemistry while staying safe in the lab.