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AIEEE 2007 Solved Paper

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Question : 8

Total: 118

In conversion of lime-stone to lime,
CaCO3( s)→CaO( s)+CO2(g) the vales of ∆H∘ and ∆S∘ are +179.1‌kJ mol −1 and 160.2J∕K respectively at 298K and 1 bar. Assuming that ∆H∘ do not change with temperature, temperature above which conversion of limestone to lime will be spontaneous is

1008 K
1200
845 K
1118 K

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