Which equation shows dehydration of ethanol?
C2H5OH+O2→CH3COOH\mathrm{C_2H_5OH+O_2\rightarrow CH_3COOH}C2H5OH+O2→CH3COOH
C2H4+H2O→C2H5OH\mathrm{C_2H_4+H_2O\rightarrow C_2H_5OH}C2H4+H2O→C2H5OH
CH3COOH→CH4+CO2\mathrm{CH_3COOH\rightarrow CH_4+CO_2}CH3COOH→CH4+CO2
C2H5OH→C2H4+H2O\mathrm{C_2H_5OH\rightarrow C_2H_4+H_2O}C2H5OH→C2H4+H2O
43 exam-style questions on Edexcel GCSE Chemistry 10.4 Alcohols and carboxylic acids, covering 10.4.1 Alcohols and the -OH functional group, 10.4.2 Carboxylic acids and the -COOH functional group, 10.4.3 Oxidation of alcohols and homologous series, and 10.4.4 Fermentation and fractional distillation of ethanol. Each one has a worked solution and a mark scheme showing where the marks go.