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Which statement is true regarding a process for which ΔH is positive and ΔS is negative? Recall that, for any process: ΔG = ΔH - TΔSSelect answer from the options belowThe process is spontaneous at low temperatures only.The process is not spontaneous at any temperature.The process is spontaneous at all temperatures.The process is spontaneous at high temperatures only.

Question

Which statement is true regarding a process for which ΔH is positive and ΔS is negative? Recall that, for any process: ΔG = ΔH - TΔSSelect answer from the options belowThe process is spontaneous at low temperatures only.The process is not spontaneous at any temperature.The process is spontaneous at all temperatures.The process is spontaneous at high temperatures only.

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Solution

The correct answer is: The process is not spontaneous at any temperature.

Here's why:

The Gibbs Free Energy equation is ΔG = ΔH - TΔS.

For a process to be spontaneous, ΔG must be negative.

Given that ΔH is positive and ΔS is negative, the equation becomes ΔG = positive - (Temperature * negative).

No matter what the temperature is, the second part of the equation (TΔS) will always be negative because a negative multiplied by any number is negative.

So, the equation becomes ΔG = positive - negative, which results in a positive ΔG.

Therefore, the process is not spontaneous at any temperature because ΔG is not negative.

This problem has been solved

Similar Questions

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What does a negative ΔG value for a reaction at a specific temperature and pressure indicate?Select one:a.The reaction is at equilibrium.b.The reaction is spontaneous in the forward direction.c.The reaction is non-spontaneous under the given conditions.d.The reaction is spontaneous in the reverse direction.

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