1.

The values of DeltaH and DeltaS for a reaction are respectively "30 kJ mol"^(-1) and 100 KJ^(-1) mol^(-1). Then the temperature above which the reaction will become spontaneous is____

Answer»

300 K
30 K
100 K
`20^@C`

Solution :`DeltaG=DeltaH-T DeltaS`
At 300 K ,
`DeltaG=30000 "J mol"^(-1) -300 K xx 100 J K^(-1) mol^(-1)`
`DeltaG=0`
above 300 K ,`DeltaG` will be NEGATIVE and reaction becomes SPONTANEOUS.


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