1.

For a given reaction, DeltaH = 35.5 kJ"mol"^(-1) and DeltaS = 83.6 J K^(-1) "mol"^(-1). The reaction is spontaneous at (assume that DeltaH and DeltaS do not vary with temperature.

Answer»

`T gt425K`
all temperatures
`T lt298K`
`T lt425K`

Solution :`DeltaG = DeltaH -TDeltaS`
For a reaction to be at EQUILIBRIUM,
`DeltaG =0`
`DeltaH = TDeltaS`
or `T = (DeltaH)/(DeltaS) = (35.5 xx 10^(3))/(83.6)`
` = 425 K`
Since reaction is endothermic, it will be sponatneous at `T gt 425 K`


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