Intellectual Olympiad in Chemistry - 2026 ongoing
1000 ₸
Subject: Chemistry Level: V (I is easiest, XII is hardest)
Category: student
Question language: English
Questions: 15
Example question: Which species acts as a Lewis acid in the reaction BF₃ + NH₃ → F₃B←NH₃? NH₃, BF₃, F⁻, H₃N→BF₃