Question

b) Explain, using basic thermodynamics, why ice melts spontaneously at 0 °C given a standard molar enthalpy of fusion of +6.009 kJ/mol for ice at this temperature. [5 marks]

c) The production of gaseous ammonia, NH3, from its elements is an equilibrium process with an equilibrium constant, K, of 3.5 ? 108 and reaction enthalpy, ? rxnH of ?92.2 kJ/mol at 25°C. Write a balanced chemical equation for the equilibrium, and describe any steps taken to increase ammonia yield in a manufacturing process.

Answer 1

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