If a reaction has negative enthalpy (ΔH < 0) and positive entropy (ΔS > 0), then the reaction is:
Answer: It is spontaneous
Explanation
Use the Gibbs free energy equation:
ΔG=ΔH−TΔS
For a process to be spontaneous,
-
If (exothermic)
-
And (entropy increases)
-
Then:
ΔG=negative−T×positive=always negative
So, no matter the temperature, will be negative ⇒ spontaneous at all temperatures
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