To address the global environmental challenge of stratospheric ozone depletion, international agreements have mandated the phase-out of chlorofluorocarbons (CFCs) in favour of safer alternatives. Which of the following represents the formula of a hydrofluorocarbon (HFC) that has an ozone depletion potential (ODP) of zero because it contains no chlorine-carbon bonds?
CCl3FCCl_3FCCl3F
CHClF2CHClF_2CHClF2
CF3CH2FCF_3CH_2FCF3CH2F
CH3ClCH_3ClCH3Cl
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.