ΔE When Liquid Chlorine Changes Phase To Chlorine Gas At SBP
Strings (SiPjAjk) = S7P5A51 Base Sequence = 12735 String Sequence = 12735 - 5 - 51
What is ΔE (change in internal energy) when liquid chlorine changes phase to chlorine gas at standard boiling point, 284oK (vapor pressure 1 atm)? The enthalpy of vaporization of chlorine, Cl2, is 20.41 KJ/mole.
S7P5A51 (Change - Physical Change)
Pj Problem of Interest is of type change (change in internal energy).
The equation of interest is:
enthalpy change (ΔH) = internal energy change (ΔE) + pressure-volume work (PΔV)
So, ΔH = ΔE + PΔV -------------(1)
So, ΔE = ΔH - PΔV ------------(2)
PΔV = nRT.
where, n is number of moles, R is universal gas constant = 8.315, T = temperature degrees K.
So, PΔV =1 x 8.315 x 284 = 2361.46 Joules/mole = 2.362KJ/mole.
ΔE = 20.41 - 2.362 = 18.05KJ/mole.
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