QuestionThermochemistry / Hess's law
Consider the following hypothetical reactions :
X (g) + Y (g) → XY (g); ΔH₁ = a kJ mol⁻¹
X (g) + Z (g) → XZ (g); ΔH₂ = b kJ mol⁻¹
ΔH for the reaction
Y (g) + XZ (g) → XY (g) + Z (g)
will be
- (a) (a + b) kJ mol⁻¹
- (b) a kJ mol⁻¹
- (c) b kJ mol⁻¹
- (d) (a − b) kJ mol⁻¹
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