1.

For the equilibrium MgCO_3(g)oversetDeltahArrMgO(s)CO_2(s)which of the following expressions is correct ?

Answer»

`K_p=pco_2`
`K_p=([MgO][CO_2])/([MgCO_3])`
`K_p=(p_(Mgo).p_(CO_2))/(p_(MgCO_3))`
`K_p=(p_(Mgo)+p_(CO_2))/(p_(MgCO_3))`

SOLUTION :In hetrogeneous system. `K_(c)and K_(p)` are not depend upon the concentration of pressure of solid substence Hence. At equilibrium their concentratiaon or pressure are ASSUMED as one.
`MgCO_3(s)hArrMgO(s)+CO_2(G)`
`THEREFORE K_p=Pco_(2)`


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