Redox – Iron Tablet Titration (Improved)
Iron tablet titration is a common laboratory method used to determine the amount of iron present in a sample, such as an iron supplement tablet. This method involves reacting the iron in the tablet with a solution of potassium permanganate (KMnO4) to produce a purple colour. The endpoint of the titration is reached when the…
Esterification Reaction and equilibrium constant determination.
Esterification is a common organic reaction that involves the reaction of a carboxylic acid with an alcohol to form an ester and water. In this experiment, we will be carrying out an esterification reaction to test the equilibrium position at different temperatures using ethanoic acid and ethanol. Safety precautions: • Wear personal protective equipment (PPE)…
The Winkler Method – Biological Oxygen Demand BOD
The Winkler method is a widely used analytical technique for determining the amount of dissolved oxygen in water samples. Dissolved oxygen is essential for aquatic life and is an important indicator of water quality. The Winkler method involves the addition of reagents to a water sample that react with dissolved oxygen to produce a measurable…
How to score full marks in the Conclusion and Evaluation in the IBDP Internal Assessment (IA) or Extended Essay (EE)
This criterion assesses the student’s ability to draw valid conclusions based on the evidence obtained and to evaluate the reliability and limitations of the investigation. The assessment looks for evidence of appropriate analysis and interpretation of the data, clear conclusions, and an understanding of the limitations of the investigation.
How to write the perfect Chemistry Internal Assessment (IA)
The Internal Assessment (IA) for Chemistry in the International Baccalaureate Diploma Programme (IBDP) is an experimental investigation that requires students to demonstrate their ability to design and conduct experiments, analyze data, and draw conclusions. Here is a plan for a Chemistry IA: Topic Selection: Choose a topic that interests you and aligns with your learning…