The Standard Enthalpy of Formation of Ammonia Gas Is -46 $\circ$

question 87

Multiple Choice

The standard enthalpy of formation of ammonia gas is -46.11 kJ.mol^-1 at 298 K.What is the standard reaction enthalpy for the Haber process at 500 ^$\circ$ C? The molar heat capacities of nitrogen,hydrogen,and ammonia are 29.12,28.82,and 35.06 kJ.mol^-1 respectively.

• A)(-97.65 kJ.mol^-1 )
• B)(-113.81 kJ.mol^-1 )
• C)(-56.91 kJ.mol^-1 )
• D)(-92.22 kJ.mol^-1 )
• E)(-103.09 kJ.mol^-1 )

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