Problem: For ammonia (NH3), the enthalpy of fusion is 5.65 kJ/mol and the entropy of fusion is 28.9 J/K•mol.a. Will NH3(s) spontaneously melt at 200. K?

FREE Expert Solution

Now that we have ΔH˚rxn and ΔS˚rxn, we can now solve for ΔG˚rxn

The given temperature is 200 K.


ΔG°rxn=ΔH°rxn-TΔS°rxn

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Problem Details

For ammonia (NH3), the enthalpy of fusion is 5.65 kJ/mol and the entropy of fusion is 28.9 J/K•mol.

a. Will NH3(s) spontaneously melt at 200. K?

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Our data indicates that this problem or a close variation was asked in Chemistry: An Atoms First Approach - Zumdahl Atoms 1st 2nd Edition. You can also practice Chemistry: An Atoms First Approach - Zumdahl Atoms 1st 2nd Edition practice problems.