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28 September, 06:58

What is the enthalpy of 2NO2 (g) yields N2 (g) + 2O2 (g)

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Answers (2)
  1. 28 September, 07:02
    0
    -67.8 kJ

    Step-by-step explanation:

    2NO₂ (g) ⇌ N₂ (g) + 2O₂ (g)

    ΔH°f/kJ·mol⁻¹: + 33.9 0 0

    ΔH°r = ΣΔH°f (products) - ΣΔH°f (reactants)

    = 0 - 2 (33.9)

    = - 67.8 kJ
  2. 28 September, 07:09
    0
    The answer is - 67.68 kJ
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