Statement-1: Decrease of free energy during the process under constant temperature and pressure provides a measure of its spontaneity. Statement -2: A spontaneous change must have +ve sign of `DeltaS_("system").`
A
If both the statements are TRUE and STATEMENT-2 is the correct explanation of STATEMENT-12
B
If both the statements are TRUE but STATEMENT-2 is NOT the correct explanation of STATEMENT-12
C
If STATEMENT-1 is TRUE and STATEMENT-2 is FALSE
D
If STATEMENT-1 is FALSE and STATEMENT-2 is TRUE
Text Solution
Verified by Experts
The correct Answer is:
C
Topper's Solved these Questions
THERMODYNAMICS
NARENDRA AWASTHI|Exercise Level 1 (Q.1 To Q.30)|6 Videos
THERMODYNAMICS
NARENDRA AWASTHI|Exercise Level 1 (Q.31 To Q.60)|2 Videos
The changes in gibbs energy (Delta G) of a system for a process at constant temperature and pressure is
The change in Gibbs free energy of the system alone provides a criterion for the spontaneity of a process at constant temperature and pressure. A change in the free energy of a system at constant temperature and pressure will be : DeltaG_("system")=DeltaH_("system")-T DeltaS_(system") For a system in equilibrium, DeltaG=0 , under conditions of contant....
The change in Gibbs free energy of the system alone provides a criterion for the spontaneity of a process at constant temperature and pressure. A change in the free energy of a system at constant temperature and pressure will be : DeltaG_("system")=DeltaH_("system")-T DeltaS_(system") The free energy for a reaction having DeltaH=31400 cal, DeltaS=32 cal L^(-1) mol^(-1) at 1000^(@)C
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
Statement-1 : All the exothermic reactions are spontaneous. And Statement-2 : For a spontaneous reaction, Delta G must be negative.
NARENDRA AWASTHI-THERMODYNAMICS-Level 3 - Match The Column
