Chemistry C 141 class Calculate deltaG degree for this reaction at 25 degree C.

Question

Chemistry C 141 class

Calculate deltaG degree for this reaction at 25 degree C. Is the forward reaction spontaneous or non-spontaneous at 25 degreeC under standard conditions? How does this change at different temperatures? Estimate the transition temperature for this process. Explain the difference between the Gibbs free energy change, deltaG, and the standard Gibbs free energy change deltaG degree, for a given system. Be very specific about the conditions that distinguish between these two quantities.

Explanation / Answer

?G0 =?H-T?S

?G0=55300-175.7*(25+273)

?G0=2941.4j

As ?G0 is +ve thejreaction is non-sponteneous.

At the transition state equilibrium is reached,

?G0 =?H-T?S=0

T=?H/?S=55300/175.7=314.74K

Gibbs Free Energy ?G=Gibbs energy is the thermodynamic property of a great potential utility.

Standard Gibbs Free Energy, ?G0=It give the thermodynamic state for a given state.

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