Problems and exercisesHow to Determine the Structure of an Organic Compound
1. From composition to formula
A compound contains 40.0 % C, 6.7 % H and 53.3 % O. Its mass spectrum shows a molecular mass of 180. Calculate its empirical and molecular formulas.
2. Index of hydrogen deficiency
Calculate the index of hydrogen deficiency (IHD) of: a) C6H6; b) C6H12; c) C4H9N; d) C2H3Cl.
3. Which technique?
Which technique would you use to find out: a) whether a compound has a carbonyl group; b) its molecular mass; c) whether it is 1-propanol or 2-propanol; d) the exact arrangement of its atoms in space, if it forms crystals?