Diketahui energi ikat rata-rata (dalam KJ/mol) C = C = 614 27/07/2022 by hadi wargamasyarakat C — C = 348 C — H = 413 C — Br = 276 H — Br = 366 Entalpi reaksi adisi CH₃ — CH = CH₂ + HBr ➙ CH₃ — CH — CH₃ Ke dalam 500 gram air dilarutkan 13,35 gram AlCl₃.