A2(g) + B2(g) →2 AB(g) The activation energy (Ea) in the forward direction is +143 kJ. The activation energy (Ea) for the reverse direction is 75 kJ. Draw a properly labelled potential energy diagram for the forward direction. Include ΔrH, axis, reactants and products, activation energy and activated complex. Is this reaction endothermic or exothermic?

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