MHT CET 2024 Chemistry question
Calculate enthalpy change for following reaction. [The bond energy of C-H, C-C, C=C and H-H is 414, 347, 615 and 435 kJ respectively]
Answer: (B)
Solution
. Bonds broken: 1 C=C (615) + 1 H-H (435) = 1050 kJ. Bonds formed: 1 C-C (347) + 2 new C-H (2 x 414 = 828) = 1175 kJ (the four
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