What is ΔSsys for a condensation phase transition at 40.6 °C for a compound that condenses at 40.6 °C and the ΔHsys = -88.1 kJ mol-1 for this process?
ΔHsys = -88.1 kJ mol-1
= -88100 J/mol
T = 40.6 oC
= (40.6 + 273.15) K
= 313.75 K
use:
ΔSsys = ΔHsys / T
= ( -88100 J/mol)/( 313.75 K)
= -281 J/mol.K
Answer: -281 J/mol.K
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