Industrial fractional distillation of crude oil separates the complex mixture into fractions containing compounds with similar boiling points. A sample of the gas oil fraction, which typically contains hydrocarbons with 15 to 19 carbon atoms, is analyzed.
Which of the following groups of molecular formulas represents a mixture of compounds that could all realistically be present in this fraction?
C15H31ClC_{15}H_{31}\text{Cl}C15H31Cl, C16H34C_{16}H_{34}C16H34, C17H35OHC_{17}H_{35}\text{OH}C17H35OH
C15H32C_{15}H_{32}C15H32, C16H34C_{16}H_{34}C16H34, C17H36C_{17}H_{36}C17H36
C15H32C_{15}H_{32}C15H32, C16H33NH2C_{16}H_{33}\text{NH}_2C16H33NH2, C17H35BrC_{17}H_{35}\text{Br}C17H35Br
C15H30OC_{15}H_{30}\text{O}C15H30O, C16H34C_{16}H_{34}C16H34, C17H36C_{17}H_{36}C17H36
83 exam-style questions on OCR GCSE Chemistry Organic chemistry. Each one has a worked solution and a mark scheme showing where the marks go.