Common Mistakes in the IChO
The IChO exams test deep understanding and precision under pressure. Avoiding common pitfalls in both the theoretical and practical papers can significantly improve your score.
Theoretical Exam Pitfalls
- Ignoring Stereochemistry Always draw molecules in 3D and consider all possible stereoisomers in organic and inorganic problems.
- Approximating Too Early Carry extra significant figures through all intermediate calculations and only round at the final step.
- Misinterpreting Spectroscopic Data Systematically analyze NMR, IR, and Mass Spec data together; do not jump to conclusions from a single piece of evidence.
- Overlooking Reaction Conditions Pay close attention to solvent, temperature, and catalysts, as they dictate the reaction pathway and product.
- Failing to Justify Answers Provide clear, concise reasoning for your answers; points are often awarded for the explanation.
Practical Exam Pitfalls
- Inaccurate Titration Technique Rinse burettes correctly, read the meniscus at eye level, and perform a rough titration first to locate the endpoint.
- Losing Product During Synthesis Handle transfers between glassware carefully and choose appropriate purification methods to maximize yield.
- Poor Lab Safety Follow all safety rules strictly; points can be deducted for unsafe practices, and it affects your focus.
- Not Recording Observations Write down all observations, like color changes or gas evolution, as they happen; they are often clues for analysis.