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Water boils at 95^(@)C in Denver, the mi...

Water boils at `95^(@)C` in Denver, the mile high city. Calculate the atomospheric pressure in Denver. `DeltaH_(Vap)` for `H_(2)O=40.67 KJ mol^(-1)`.

Text Solution

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`2.303 " log"(P_(2))/(P_(1))=(DeltaH)/(R)([T_(2)-T_(1)])/(T_(1)T_(2))`
`2.303 " log"(P_(2))/(P_(1))=(40.67xx10^(3))/(8.314)xx([373-368])/(373xx368)`
`(At P=P_(2)= 76 cm, T_(b)=100^(@)C)`
`P=P_(1),T_(b)=95^(@)C`
`:. (P_(2))/(P_(1))= 1.195`
`:. P_(1)=(76)/(1.195)= 63.6 cm`= 0.0837 atm
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