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If concentration are expressed in moles `L^(-1)` and pressure in atmospheres, what is the ratio of `K_(p) "to" K_(c)` for the reaction, `2SO_(2)(g)+O_(2)(g)harr2SO_(3)(g)` at `25^(@)C`?

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` Delta _(n_(g)) = n_(p) - n_(r) = -1. "Hence ", K_(p) = K_(c) (RT)^(-1) or K_(p)//K_(c)= 1//RT= 1/(0*0821 xx 298) = 0*04`
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