At what temperatures will a reaction be spontaneous if ?H = +158 kJ and ?S = +411 J/K? All temperatures above 384 K The reaction will never be spontaneous. The reaction will be spontaneous at any temperature. All temperatures below 384 K
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Step 1: Calculate the temperature at which the reaction will be spontaneous using the equation T > ΔH/ΔS. Show more…
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A particular reaction carried out at 298 K has a ΔH = -108 kJ and ΔS = +286 J/K. What is the Gibbs free energy of the reaction? Is the reaction spontaneous? If not, at what temperature would this reaction be spontaneous?
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\begin{aligned} &\text { Suppose that a reaction has } \Delta H=-40 \mathrm{~kJ} \text { and } \Delta S=-50 \mathrm{~J} / \mathrm{K} \text { . At what temperature range will it } \\ &\text { change from spontaneous to non-spontaneous? } \\ &\begin{array}{llll} \text { (a) } 0.8 \mathrm{~K} \text { to } 1 \mathrm{~K} & \text { (b) } 799 \mathrm{~K} \text { to } 800 \mathrm{~K} & \text { (c) } 800 \mathrm{~K} \text { to } 801 \mathrm{~K} & \text { (d) } 799 \mathrm{~K} \text { to } 801 \mathrm{~K} \end{array} \end{aligned}
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