CHEMISTRY / PHASE EQUILIBRIUM
Estimate vapor pressure at a second temperature from one reference point. Inspect the equation, substituted values, assumptions, and result in one guided chemistry workspace.
Use boundary
Estimate vapor pressure at a second temperature from one reference point. The page evaluates the displayed equation from your supplied values and presents both symbolic and substituted KaTeX working so the arithmetic can be checked.
ln(P2/P1)=-(Delta H_vap/R)(1/T2-1/T1)
What you provide
What you receive
Use boundary
Enthalpy of vaporization is constant over the interval and vapor behaves ideally away from the critical region.
Use internally consistent units and retain extra precision when carrying the result into another calculation.
Reviewed reference factors