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# Problem: Find the temperature above which a reaction with a ΔH of 123.0 kJ/mol and as ΔS of 90.00 J/K•mol becomes spontaneous.

###### FREE Expert Solution

We’re being asked to determine temperature above which a reaction with a ΔH of 123.0 kJ/mol and as ΔS of 90.00 J/K•mol becomes spontaneous.

The standard free energy change of a reaction (ΔG) is given by the following equation:

$\overline{){\mathbf{∆}}{\mathbf{G}}{\mathbf{=}}{\mathbf{∆}}{\mathbf{H}}{\mathbf{-}}{\mathbf{T}}{\mathbf{∆}}{\mathbf{S}}}$

Recall that if:

• ΔG < 0 or ΔG = (–); the reaction is spontaneous
• ΔG = 0; the reaction is at equilibrium
• ΔG > 0 or ΔG = (+); the reaction is non-spontaneous

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###### Problem Details

Find the temperature above which a reaction with a ΔH of 123.0 kJ/mol and as ΔS of 90.00 J/K•mol becomes spontaneous.

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Spontaneous Reaction concept. You can view video lessons to learn Spontaneous Reaction. Or if you need more Spontaneous Reaction practice, you can also practice Spontaneous Reaction practice problems.

What professor is this problem relevant for?

Based on our data, we think this problem is relevant for Professor Scerri's class at UCLA.