Chemistry-
General
Easy

Question

In which of the following reactions the entropy change is positive?

  1. H subscript 2 end subscript plus fraction numerator 1 over denominator 2 end fraction O subscript 2 end subscript rightwards arrow H subscript 2 end subscript O    
  2. stack N a to the power of plus end exponent with left parenthesis g right parenthesis below plus stack C l to the power of minus end exponent with left parenthesis g right parenthesis below rightwards arrow stack N a C l with left parenthesis s right parenthesis below    
  3. stack N a C l with left parenthesis 1 right parenthesis below rightwards arrow stack N a C l with left parenthesis s right parenthesis below    
  4. stack H subscript 2 end subscript O with left parenthesis l right parenthesis below rightwards arrow stack H subscript 2 end subscript O with left parenthesis g right parenthesis below    

The correct answer is: stack H subscript 2 end subscript O with left parenthesis l right parenthesis below rightwards arrow stack H subscript 2 end subscript O with left parenthesis g right parenthesis below

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