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| 1. |
Using bond energy data, calculate heat of formation of isoprene. 5 C(s) + 4 H_(2) (g) to H_(2) C = C underset(CH_(3))underset(|)(-) C = underset(H)underset(|)(C) H_(2) (g) Given ,C - H = 98.8 k cal , H - H = 104 kcal , C - C = 83 k cal , C = C = 147 K cal &C (s) to C (g) = 171 k cal . |
| Answer» SOLUTION :`+20.6` K CAL | |