Answer to Question #104200 in Chemistry for Maow Abdullahi

Question #104200

3. The vapour pressure of a substance is 30 torr at 250 K at what temperature will the substance have a vapour pressure of 150 torr. The enthalpy of vaporization is 45kj/mol

Expert's answer

lnp2/p1=-∆Hvap x(1/T2 - 1/T1)/R

T2=(lnp2/p1 x R/-∆Hvap) + 1/T1

T2= 3.40886705 .

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