Use the Following Information to Determine the Standard Enthalpy of Formation

question 76

Multiple Choice

Use the following information to determine the standard enthalpy of formation of NH₃(g) . N-H bond enthalpy = 390 kJ.mol^-1
$\Delta$ H_f ^$\circ$ (H(g) ) = 217.9 kJ.mol^-1
$\Delta$ H_f ^$\circ$ (N(g) ) = 472.6 kJ.mol^-1

• A)(-44 kJ.mol^-1 )
• B)(-691 kJ.mol^-1 )
• C)(-516 kJ.mol^-1 )
• D)(-83 kJ.mol^-1 )
• E)(-1170 kJ.mol^-1 )

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