Question

In an organic chemistery laboratory a scientist subjecteda hydrocarbon to combustion The products occupied a volume ratio of 4:3 under the same conditions of temperature and pressure .The scientist drew the possible structures of the hydrocarbon. She then subjected the compound to ozonolysis to identify the exact structure. Predict the products formed when the compound is treated with bro-mine water.

Answer 1

General combustion equation is
`C_xH_y+(x+y/4)O_2rarrxx.CO_2+y/2H_2C` As the molar ratio of `CO_2` and `H_2O` is 4:3
x=4 and `y/2=3rArry=6`
`thereforeX=C_4H_6`

Since it reacts With bromine water and its formula indicates that X is butyne
`therefore` X may be 1-Butyne or 2- Butyne