QuestionAugust 4, 2025

Quiz 6 - Thermodynamics ) 0:24:49 remaining If both deltaH and deltaS are negative,, deltaG will be negative. If both deltaH and deltaS are positive . deltaG will be positive. If deltaH is positive and deltaS is negative . then deltaG will be negative. If both deltaH and deltaS are negative,, deltaG will be positive. If both deltaH and deltaS are positive , deltaG will be negative. If deltaH is positive and deltaS is negative . then deltaG will be positive. If deltaH is negative and deltaS is positive , then deltaG will be negative.

Quiz 6 - Thermodynamics ) 0:24:49 remaining If both deltaH and deltaS are negative,, deltaG will be negative. If both deltaH and deltaS are positive . deltaG will be positive. If deltaH is positive and deltaS is negative . then deltaG will be negative. If both deltaH and deltaS are negative,, deltaG will be positive. If both deltaH and deltaS are positive , deltaG will be negative. If deltaH is positive and deltaS is negative . then deltaG will be positive. If deltaH is negative and deltaS is positive , then deltaG will be negative.
Quiz 6 - Thermodynamics ) 0:24:49 remaining If both deltaH and deltaS are negative,, deltaG will be negative. If both deltaH and deltaS are positive . deltaG will be positive. If deltaH is positive and deltaS is negative . then deltaG will be negative. If both deltaH and deltaS are negative,, deltaG will be positive. If both deltaH and deltaS are positive , deltaG will be negative. If deltaH is positive and deltaS is negative . then deltaG will be positive. If deltaH is negative and deltaS is positive , then deltaG will be negative.

Solution
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Answer

Statements 1 and 4 are correct. Explanation 1. Understand Gibbs Free Energy Formula The formula for Gibbs Free Energy is \Delta G = \Delta H - T\Delta S. It determines the spontaneity of a reaction. 2. Analyze Sign Combinations Evaluate each combination of \Delta H and \Delta S using the formula to determine the sign of \Delta G. 3. Case Analysis 1. If both \Delta H and \Delta S are negative, \Delta G depends on temperature T. For low T, \Delta G can be negative. 2. If both \Delta H and \Delta S are positive, \Delta G depends on temperature T. For high T, \Delta G can be negative. 3. If \Delta H is positive and \Delta S is negative, \Delta G is positive regardless of T. 4. If \Delta H is negative and \Delta S is positive, \Delta G is negative regardless of T.

Explanation

1. Understand Gibbs Free Energy Formula<br /> The formula for Gibbs Free Energy is $\Delta G = \Delta H - T\Delta S$. It determines the spontaneity of a reaction.<br /><br />2. Analyze Sign Combinations<br /> Evaluate each combination of $\Delta H$ and $\Delta S$ using the formula to determine the sign of $\Delta G$.<br /><br />3. Case Analysis<br /> 1. If both $\Delta H$ and $\Delta S$ are negative, $\Delta G$ depends on temperature $T$. For low $T$, $\Delta G$ can be negative.<br /> 2. If both $\Delta H$ and $\Delta S$ are positive, $\Delta G$ depends on temperature $T$. For high $T$, $\Delta G$ can be negative.<br /> 3. If $\Delta H$ is positive and $\Delta S$ is negative, $\Delta G$ is positive regardless of $T$.<br /> 4. If $\Delta H$ is negative and $\Delta S$ is positive, $\Delta G$ is negative regardless of $T$.
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