11Ans C is correct
I had read it in some book that since the universe is expanding therefore the orderliness is reducing therefore entropy will keep on increasing
Which of the foll statements are correct?
A)Entropy of isolated system increases in an irreversible process
B)Entropy of isolated system remains unchanged in a reversible process
C)Entropy can never decrease
D)ΔSsys and ΔSsurr are negative quantities
I thought it would be A,B but ans given is B,C,D
Net entropy won't decrease but either ΔSsys or ΔSsurr can be -ve
but that doesn't agree with the answer,can anyone explain
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9 Answers
11
1That means the statement is incomplete...see wat it reads...it shud b 'In spontaneous process,entropy can never decrease'
cheers!
11A is false
Since there are many reactions in which the entropy is decreases
Like
Na +2Cl = NaCl2
1can someone tell about D [7]
how is that correct
ΔSsys and ΔSsurr how can both be negative ??
1dude . I think the Q should be which of the following statements are incorrect not which are correct , as provided by you .
1yes i agree with sri..
if it is about 'correct' then, ans will be A only.
if its about incorrect, it will be B,C,d as given .
1b) it dsnt remain unchanged.
c) entropy CAN dec... the thing is: entropy of the whole universe NEVER dec.. dat has to be specified.
d) both cant be negative... if the statement was like.. delS(surr) and delS(sys) 'may' be negative... then it wud have been 'true'.. but .. here it is incorrect.