The molar enthalpy of reaction of
C5H12(g) + 8 O2(g) → 5 CO2(g) + 6 H2O(g)
is -3244.8 kJ/mol for C5H12(g). If 100.0g of oxygen gas react, how much heat is released by the reaction?
How much Heat is Released Question?
2021-03-29 2:12 pm
回答 (2)
2021-03-29 4:35 pm
✔ 最佳答案
Molar mass of O₂ = 16.00×2 = 32.00 g/molMoles of O₂ reacted = (100.0 g) / (32.00 g/mol) = 3.125 mol
According to the equation, mole ratio C₅H₁₂ : O₂ = 1 : 8
Moles of C₅H₁₂ reacted = (3.125 mol) × (1/8) = 0.390625 mol
Heat released = (0.390625 mol) × (3244.8 kJ/mol) = 1268 kJ
2021-03-29 8:09 pm
(100.0 g O2) / (31.99886 g O2/mol) x (3244.8 kJ / 8 mol O2) = 1268 kJ
收錄日期: 2021-04-25 13:54:46
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https://hk.answers.yahoo.com/question/index?qid=20210329061243AAOo4KF