For the pure solid `CaCO_3` in the reaction,
`CaCO_(3(s)) Leftrightarrow CaO_(s)+CO_(2(g))`
Which of the following ratio is constant for each?

Options

A. `("Weight")/("Molecular mass")`
B. `("Weight")/("Density")`
C. `("Actual density")/("Vapour density")`
D. All of these

Answer

C

Explanation

`CaCO_(3(s)) Leftrightarrow CaO_(s)+CO_(2(g))`
Vapour density `(D)=M/2," Actual density (d)"=(PM)/(RT)`
`d/D=(PM xx 2)/(RT xx M)=(2P)/(RT)`
At equilibrium, P and T remains constant