BSc Nursing GNM 2020 Solved Paper

For the equilibrium,
CaCO3(s)⇌CaO(s)+CO2(s)
The equilibrium constant,
KC=‌

[CaO(s)][CO2(s)]

[CaCO3(s)]

Since, [CaCO3(s)] and [CaO(s)] are both pure solids and the molar concentration ofa pure solid is constant (i.e. taken as unity). Therefore, modified equilibrium constant.
KC=[CO2(g)]