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①C4H10(g)+
O2(g)=4CO2(g)+5H2O(l) △H=-2878kJ•mol-1②C4H10(g)+
O2(g)=4CO2(g)+5H2O(g) △H=-2658kJ•mol-1③C4H10(g)+
O2(g)=4CO(g)+5H2O(l) △H=-1746kJ•mol-1④C4H10(g)+
O2(g)=4CO(g)+5H2O(g) △H=-1526kJ•mol-1由此判断，正丁烷的燃烧热ΔH为
| A．-2878kJ•mol-1 | B．-2658kJ•mol-1 | C．-1746kJ•mol-1 | D．-1526kJ•mol-1 |
同类型试题
y = sin x， x∈R， y∈[–1，1]，周期为2π，函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x， x∈[–1，1]， y∈[–π/2，π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
y = sin x， x∈R， y∈[–1，1]，周期为2π，函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x， x∈[–1，1]， y∈[–π/2，π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
