1. Does the reaction 3 H2(g) + Fe2O3(s) 2 Fe(s) + 3 H2O(g) occur spontaneously at 298 K and standard state conditions?
Calculate the value of S°univ.
2. The formation constant for the following reaction is Kf = 5.6 108 at 25°C.
Ni2+(aq) + 6 NH3(aq) Ni(NH3)62+(aq)
Determine G when [Ni(NH3)62+] = 0.015 M, [Ni2+] = 0.0014 M, and [NH3] = 0.0050 M.
3. A key step in the metabolism of glucose for energy is the isomerization of glucose-6-phosphate (G6P) to fructose-6-phosphate (F6P) as shown below.
G6P F6P
At 298 K, the equilibrium constant for the isomerization is 0.510.
Calculate G when Q, the [F6P]/[G6P] ratio, equals 25.0.
Calculate Q in the cell if G = -1.50 kJ/mol.