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For a spontaneous process Delta S("syste...

For a spontaneous process `Delta S_("system") = +ve`.

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A : The energy of the universe is constant, whereas the entropy of the universe is continuously increasing. R : For spontaneous process Delta S gt 0 .

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How many of the following statement(s) is/are true for free expansion of ideal gas in an insulated container ? 1. It is a Reversible process. 2. Delta H=0 , for this process. 3. Delta E=0 , for this process. 4. Delta(PV)=0 5. Delta T = 0 , for this process. 6. Delta S_("surrounding")=0 , for this process. 7. Delta S_("system")=0 , for this process. 8. Delta S_("total") = 0 , for this process.

Statement-1: For a process to be spontaneous, Delta G as well as Delta S has to be less than zero. Statement-2 : For spontaneous change, Delta S_("total") gt 0

In a reversible process, DeltaS_("system") + DeltaS_("surrounds") is: