Question

For a certain reaction the change in enthalpy and change in entropy are 40.63 mois
100 JK? What is the value of aG at 27°C and indicate whether the reaction is possible???


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Answer 1

Answer:

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Answer 2

The value of ΔG at 27°C is 10630 J

The reaction is not possible.

Given:

Temperature = T = 27°C = 27 + 273 = 300 K

Change in enthalpy = ΔH = 40.63 × 10³ Jmol⁻¹ = 40630 Jmol⁻¹

Change in entropy = ΔS = 100 J/K

Solution:

The change in spontaneity is given by the formula below:

ΔG = ΔH - TΔS

On substituting the values, we get,

ΔG = 40630 - (300 × 100)

ΔG = 40630 - 30000

∴ ΔG = 10630 J

ΔG is in positive sign which means the reaction is not possible.