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What is the enthalpy change for the reaction: N2(g) + 3H2(g) → 2NH3(g) if ΔHf° for NH3 is -45.9 kJ/mol?

Practice Questions

1 question
Q1
What is the enthalpy change for the reaction: N2(g) + 3H2(g) → 2NH3(g) if ΔHf° for NH3 is -45.9 kJ/mol?
  1. -137.7 kJ
  2. -91.8 kJ
  3. 0 kJ
  4. 45.9 kJ

Questions & Step-by-step Solutions

1 item
Q
Q: What is the enthalpy change for the reaction: N2(g) + 3H2(g) → 2NH3(g) if ΔHf° for NH3 is -45.9 kJ/mol?
Solution: The enthalpy change for the reaction is calculated as ΔH = 2 * ΔHf°(NH3) = 2 * (-45.9 kJ) = -91.8 kJ.
Steps: 0

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