A Levels Chemistry (9701)•9701/13/O/N/19
Explanation
Insufficient data for hydrazine reaction enthalpy Steps:
- Identify required ΔH_f° values: N₂H₄(l), N₂O₄(g), H₂O(g), N₂(g)=0.
- Provided data for NH₄⁺(aq), NH₃(g), H⁺(aq), NH₄⁺(g) irrelevant to N₂H₄ or N₂O₄.
- No ΔH_f° for key reactants/products given.
- Cannot apply ΔH_rxn = Σ ΔH_f°(products) - Σ ΔH_f°(reactants).
Not enough information.
Final answer: Not enough information.
Topic: Chemical energetics
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