the enthalpy change of a system is 1.25 x 10^5 J and the entropy change is 300 J/K. calculate the free energy change of the system at 290 K
delta G = delta H - T*delta S.
To calculate the free energy change (ΔG) of a system, you can use the equation:
ΔG = ΔH - TΔS
Where:
ΔH is the enthalpy change of the system
ΔS is the entropy change of the system
T is the temperature in Kelvin
In this case, you are given ΔH = 1.25 x 10^5 J and ΔS = 300 J/K. The temperature is given as 290 K.
Now plug in the values into the equation:
ΔG = (1.25 x 10^5 J) - (290 K)(300 J/K)
To calculate the value, follow the order of operations:
ΔG = 1.25 x 10^5 J - 87,000 J
Using simple subtraction:
ΔG = 37,000 J
Therefore, the free energy change (ΔG) of the system at 290 K is 37,000 J.