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InterviewSolution
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In the following questions morethan one correlation is possible between options of both columns. Match the following `:` `{:(,"Reaction",,"Entropy change"),((i) ,"A liquid vaporises",(a),DeltaS=0),((ii),"Reaction is non-spontaneous at all temperatures and " DeltaH " is positive",(b),DeltaS="positive"),((iii),"Reversible expansion of an ideal gas ",(c ) , DeltaS = "negative"):}` |
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Answer» Correct Answer - `(i)-(b),(ii)-(c ),(iii)-(a)` (i) When a liquid vaporises, i.e.,liquid `rarr` vapour, entropy increases, i.e.,`DeltaS = + ve`. Hence, `(i) rarr(b)`. (ii) When `DeltaH = +ve. i.e.,` energy factor oppose . The process is non-spontaneous at all temperature if entropy factor also opposes the process, i.e., `DeltaS = - ve` . Hence,`(ii) rarr (c )` (iii) In the reversible expansion of an ideal gas, the system remains in equilibrium at every stage. Hence, `DeltaS =0, i.e., (iii) rarr (a)`. |
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