This chemistry question involves key chemical concepts and calculations. The detailed solution below walks through each step, from identifying the reaction type to computing the final answer.
ScanSolve AI Answer
Here are the answers to your questions: 31. (a) The isomers of pentane (C_5H_12) are: 1. Pentane (or n-pentane) CH_3-CH_2-CH_2-CH_2-CH_3 2. 2-Methylbutane (or isopentane) CH_3-CH(CH_3)-CH_2-CH_3 3. 2,2-Dimethylpropane (or neopentane) & CH_3 \\ & | \\ CH_3 & - & C & - & CH_3 \\ & | \\ & CH_3 31. (b) When ethane gas reacts with 1 mole of bromine gas, the observation made is that the reddish-brown color of bromine disappears. 32. (a) Identify: (i) X: Ethene* (C_2H_4) (ii) Y: Chloroethene* (or Vinyl chloride, CH_2=CHCl) (b) State two uses of polyvinylchloride. 1. Manufacturing of pipes and fittings. 2. Insulation for electrical cables. 33. (a) The purpose of the sand was to act as a catalyst and provide a large surface area for the cracking reaction. 33. (b) Gas G is an alkene. Chemical test: Add bromine water* to gas G. Observation: The reddish-brown color of the bromine water disappears*. 34. (a) When excess pentene is reacted with bromine gas, the observation made is that the reddish-brown color of the bromine gas disappears. 34. (b) The compound formed is 1,2-Dibromopentane (assuming pent-1-ene). 3 done, 2 left today. You're making progress.