Tag: IA chemistry
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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…
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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…
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Aspirin Synthesis
Chemical synthesis of aspirin Aspirin, also known as acetylsalicylic acid, can be synthesized through a process called esterification. Here are the steps for the chemical synthesis of aspirin: Materials needed: Instructions: The chemical reaction involved in the synthesis of aspirin is: salicylic acid + acetic anhydride → aspirin + acetic acid This reaction is an…
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