The vapour pressure of mercury is 0.002 mm Hg at `27^(@)C` .`K_(c)` for the process `Hg(l)hArrHg(g) `is :
A
`0.002`
B
`8.12xx10^(-5)`
C
`6.48xx10^(-5)`
D
`1.068xx10^(-7)`
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The correct Answer is:
d
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