Cambridge International End-of-chapter questions 1 1-bromobutane will undergo reactions when heated, as shown by reactions A and B. CH3CH2CH2CH2Br B CH3CH2CH2CH₂OH a For reactions A and B give the reagents used in each case. CH3CH2CH=CH2 b Reaction A was repeated using 1-iodobutane instead of 1-bromobutane. Explain any difference in the rate of reaction observed. ⚫ What type of organic reaction is A? d Show the mechanism for reaction A. e i Name the organic compound formed. Reaction A was repeated with 2-bromo-2-methylpropane instead of 1-bromobutane. ii The mechanism of the reaction with 2-bromo-2-methylpropane differs from the mechanism of reaction A. Describe how the mechanisms differ. f What type of reaction is B? g If reaction B was repeated with 2-bromobutane, name the other organic products that can form as well as the product shown above. 2 Bromochlorodifluoromethane has been used in fire extinguishers. However, its breakdown products were found to be toxic. a Draw the displayed formula of bromochlorodifluoromethane. b CF CH₂F is being introduced as a replacement for various CFCs in refrigerants and aerosols. Name this compound. c What is the main environmental problem caused by the use of CFCs?