What Is the Standard Enthalpy of Formation of Liquid Diethylamine,(CH₃CH₂)₂NH

question 29

Multiple Choice

What is the standard enthalpy of formation of liquid diethylamine,(CH₃CH₂) ₂NH?
N₂O₅(g) + 8CH₄(g) → 2(CH₃CH₂) ₂NH(l) + 5H₂O(l) ; ΔH° = -1103 kJ
Substance
ΔH°_f (kJ/mol)
N₂O₅(g)
+11) 3
CH₄(g)
-74) 9
H₂O(l)
-285.8

• A)-131 kJ/mol
• B)-421 kJ/mol
• C)+131 kJ/mol
• D)-1452 kJ/mol
• E)+421 kJ/mol

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