For a spontaneous process, which of the following MUST be true? (select all that apply) Select all that apply: TΔS>ΔH ΔG>0 ΔSuniv>0 ΔSsys>ΔSsurr
For reaction to be spontaneous:
ΔG < 0
since
ΔG = ΔH - T*ΔS
So,
ΔH - T*ΔS < 0
T*ΔS > ΔH
For reaction to be spontaneous:
ΔS univ > 0
Since
ΔS univ = ΔS sys + ΔS surr
So,
ΔS sys + ΔS surr > 0
ΔS sys > -ΔS surr
Answer:
TΔS > ΔH
ΔS univ > 0
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