Ammonia is produced by the Haber process, in which nitrogen and hydrogen are reacted directly using an iron mesh impregnated with oxides as a catalyst. For the reaction
equilibrium constants (Kp values) as a function of temperature are
300°C, 4.34 × 10−3
500°C, 1.45 × 10−5
600°C, 2.25 × 10−6
Is the reaction exothermic or endothermic?
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