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When Nitrogen Gas Reacts with Hydrogen Gas to Form Ammonia \rarr

Question 56

Multiple Choice

When nitrogen gas reacts with hydrogen gas to form ammonia, 92.38 kJ of heat are given off for each mole of nitrogen gas consumed, under constant pressure and standard conditions. What is the correct value for the standard enthalpy of reaction in the thermochemical equation below when 0.750 mol of hydrogen reacts? N2(g) + 3H2(s) \rarr 2 NH3(g)


A) +34.5 kJ
B) -98.3 kJ
C) +59.2 kJ
D) -59.2 kJ
E) -23.1 kJ

Correct Answer:

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