Energetics, Thermochemistry, and Reaction Feasibility
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A-Level Chemistry Q & A Practice
1 of 5 free exam-style exercises in this topic
Calculate ΔH° for CH₄(g)+2O₂(g)→CO₂(g)+2H₂O(l).
species
CH₄(g)
CO₂(g)
H₂O(l)
ΔHf° / kJ mol⁻¹
−75
−394
−286
Select one option.
A
−891 kJ mol⁻¹
B
−605 kJ mol⁻¹
C
−361 kJ mol⁻¹
D
+891 kJ mol⁻¹
E
−755 kJ mol⁻¹
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