Hello, I was just looking at this site: http://hyperphysics.phy-astr.gsu.edu/HBASE/thermo/electrol.html which has a value TΔS = 48.7 kJ (change in entropy) ... Which i believe comes from the entropy value 69.91 J/K. Can someone explain where the value 48.7 kJ comes from? I understand it is the environmental energy 'input' but where did the 48.7 kJ come from? Thanks in advance.