Solution entropy

by Big-Daddy
Tags: entropy, solution
Big-Daddy is offline
Jan8-14, 07:47 PM
P: 334
Normally due to H+ being the reference state in solution, all 'standard molar' state variables and 'standard value of formation' state variables are 0 for it. But H2(g) has a standard enthalpy of formation = 0 and standard molar entropy of 115 Jmol-1K-1. Then shouldn't ΔG(298) for the reaction

2H+(aq) + 2e- = H2(g)

be -34,720 J and K = 1 * 106, E=+0.1799?

But I thought according to electrochemistry that E=ΔG=0 for this reaction and thus K=1.
Phys.Org News Partner Chemistry news on
Patented research remotely detects nitrogen-rich explosives
Pocket-sized anthrax detector aids global agriculture
Structure of sodium channels different than previously believed

Register to reply

Related Discussions
Entropy of a rubber-band (force determined by entropy or energy)? Advanced Physics Homework 2
Physical interpretation of entropy if expansion causes a state of maximum entropy? Cosmology 17
Show how the Boltzmann entropy is derived from the Gibbs entropy for equilibrium Advanced Physics Homework 4
entropy of a solution problem( please help) Biology, Chemistry & Other Homework 1
How is the entropy of the universe increasing when entropy is simply transferred? Introductory Physics Homework 5