the standard free energy change for the decomposition of two moles of hydrogen peroxide at 25â€‹oâ€‹...

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Chemistry

the standard free energy change for the decomposition of twomoles of hydrogen peroxide at 25^â€‹oâ€‹ C is -224 kJ.
2H_â€‹2O_â€‹2(l) -> 2 H_â€‹2O(l) +O_â€‹2(g)Â Â Â Â Â Â Â Â Â Â delta G^â€‹o = -224kJ
a.Â Â Â Â Â Calculate the equilibriumconstant for the reaction
b.Â Â Â Â Â What is the chemicalsignificance of the value of the equilibrium constant?
c.Â Â Â Â Â Â The standard enthalpychange, delta H^â€‹o , for decomposition of hydrogenperoxide is + 196.1 kJ. Determine the standard entropy change,delta S_^â€‹^â€‹o, for the reaction at25^o â€‹C?
d.Â Â Â Â Â i) what is the significance ofthe standard free energy change?
Â Â Â Â Â Â Â Â Â ii) Whatis the significance of the standard enthalpy change?
Â Â Â Â Â Â Â Â iii) What isthe significance of the standard entropy change?

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4.4 Ratings (1033 Votes)

a 2H2O2l 2 H2Ol O2gGo 224kJGo RT lnK224 x 103 J 8314 JKmol298 K lnKln K 9041K 189 x 1039b A very high value of Kequilibrium constant indicates thatthe reaction goes in the forward direction to a large extentalmost See Answer

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