Question
In the conversion of limestone to lime:
CaCO3(s)→CaO(s)+CO2(g)
The values of △H∘ and △S∘ are 179.1 kJ mol−1 and 160.2 J/K respectively at 298 K and 1 bar. Assuming △H∘ and △S∘ remains constant with temperature, at what temperature will the conversion of limestone to lime be spontaneous?
CaCO3(s)→CaO(s)+CO2(g)
The values of △H∘ and △S∘ are 179.1 kJ mol−1 and 160.2 J/K respectively at 298 K and 1 bar. Assuming △H∘ and △S∘ remains constant with temperature, at what temperature will the conversion of limestone to lime be spontaneous?
Answer: Option A
:
A
What is the criteria for spontaneity?
The △G∘ value.
We know that:
△G∘ = △H∘ - T△S∘
For spontaneous reactions △G∘ = -ve
△G∘ = △H∘ - T△S∘
∴△H∘< T△S∘
Or T > △H∘△S∘ > 179.10×103160.2 > 1118 K
Was this answer helpful ?
:
A
What is the criteria for spontaneity?
The △G∘ value.
We know that:
△G∘ = △H∘ - T△S∘
For spontaneous reactions △G∘ = -ve
△G∘ = △H∘ - T△S∘
∴△H∘< T△S∘
Or T > △H∘△S∘ > 179.10×103160.2 > 1118 K
Was this answer helpful ?
More Questions on This Topic :
Latest Videos
Latest Test Papers
Submit Solution