For a certain chemical reaction, the standard Gibbs free energy of reaction at 10.0 °C is 149. kJ. Calculate the equilibrium constant K for this reaction to 2 significant digits. Round your answer K ?

Respuesta :

Answer:

This is confusing

Explanation:

Answer: The equilibrium constant for this reaction is [tex]3.1\times 10^{-28}[/tex]

Explanation:

To calculate the equilibrium constant (at 15°C) for given value of Gibbs free energy, we use the relation:

[tex]\Delta G^o=-RT\ln K_{eq}[/tex]

where,

[tex]\Delta G^o[/tex] = standard Gibbs free energy = 149. kJ/mol = 149000 J/mol  (Conversion factor: 1 kJ = 1000 J )

R = Gas constant = [tex]8.314J/K mol[/tex]

T = temperature = [tex]15^oC=[273+15]K=283K[/tex]

[tex]K_{eq}[/tex] = equilibrium constant at 10°C = ?

Putting values in above equation, we get:

[tex]149000J/mol=-(8.314J/Kmol)\times 283K\times \ln K_{eq}\\\\K_{eq}=3.1\times 10^{-28}[/tex]

Hence, the equilibrium constant for this reaction is [tex]3.1\times 10^{-28}[/tex]