Home › NEET UG › Chemistry › Chemical Equilibrium › In the synthesis of ammonia (N2 + 3H2 ⇌ 2NH3 + h…
In the synthesis of ammonia (N2 + 3H2 ⇌ 2NH3 + heat), increasing the TEMPERATURE will:
AShift equilibrium forward (more NH3 production gain)
BHave no effect on the equilibrium position at all
CShift backward (less NH3) since forward is exothermic
DCause the reaction to stop completely in chamber
Answer & Solution
Correct answer: C. Shift backward (less NH3) since forward is exothermic
Forward reaction is exothermic (+ heat). By Le Chatelier, increasing T shifts equilibrium in endothermic direction = BACKWARD (less NH3). Hence Haber process uses moderate T (~450°C) + high P + iron catalyst.
Related questions
For Fe³⁺(aq) + SCN⁻(aq) ⇌ [Fe(SCN)]²⁺(aq), adding more KSCN causes the Fe³⁺ concentration The solubility of carbon dioxide in a soft drink falls as temperature rises because dissolWhen the temperature of an exothermic reaction at equilibrium is raised, the equilibrium cAdding a catalyst to a reversible reaction at equilibrium:A sealed flask of reacting gases shows no colour change for an hour. What is actually happBesides VSEPR and the Kossel Lewis approach, which two theories are listed?Which theory is abbreviated VSEPR?Why can lattice enthalpy not be calculated directly from attraction and repulsion alone?