Answer :
-23.4kj is the standard gibbs free energy associated with the formation of ammonia from nitrogen and hydrogen at 25 c and 500 c
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The temperature is 25 deg C or 298 K.
ΔGo =−RTlnK=−8.314×298×ln1.3×104 =−23469J=−23.4kJ
Hence, the standard free energy change is -23.4 kJ
Gibbs free energy, thermodynamics The word "free energy" refers to a thermal potential that can be utilized to determine the maximal amount of work that a thermodynamically closed system can perform at constant pressure and temperature. The change in limitless energy that occurs when a chemical is created from its components in their most thermodynamically states under appropriate conditions is referred to as the free basic energy of formation. Ammonia is a colourless gas that has a strong suffocating odour. It easily dissolves in the water, forming an ammonium hypochlorite that can cause discomfort and burns. Under pressure, ammonia gas compresses easily and formation a clear, colourless liquid.
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