[填空题]
The feasibility of a reaction proceeding spontaneously can be predk roxcxa:;gn :qdn7x3fkru9(-2tr.o icted e7oes v1vxxi lnty09x)/x 6(7xi,plbfun2j1using the follow vu7niy x0exe tvl)psob6j1 /l97xi21x,x fn(ing equation:
ΔG=−TΔS+ΔH.
Where ΔG is the change in Gibb’s free energy, ΔS is the change in entropy, and ΔH is the change in enthalpy.
1.When ΔG<0, a reaction can be described as spontaneous. Use the graph above to deduce the lowest temperature at which the reaction becomes spontaneous.
Read graph at ΔG=0, K.
2.Calculate the gradient of the line and state its units.
3.Use your answer to part (b) to deduce the value and correct units for ΔS.
4.Use the graph to determine the value for ΔG when the temperature is raised to 675K.
Extrapolation of the line= (kJ mol$^{-1}$)
5.Calculate a value for y-intercept= and state the correct units {kJmol$^{-1}$|kJmol$^{-1}K^{-1}$}.
