NEED ASAP

1.

What is the pOH of the following reaction when the

pressure of O₂ is 1 atm, the temperature is 25 C, the

concentration of Al3+ is 1.00 M, and the cell potential

reads 2.781 V?

3O_2(g) + 6H₂O + 4Al_(s) 4Al³⁺_(aq) + 12OH_(aq)

O_2(g) + 2H₂O + 4e 4OH_(aq) E = +0.401 V

Al³⁺_(aq) Al_(s) + 3e E = 1.66 V

2.

Identify the half-reaction that occurs at the anode for

the reaction:

4H⁺_(aq) + 3S_(s) + 4NO_3(aq) 3SO_2(g) + 4NO_(g) + 2H₂O

3. The production of ammonia from hydrogen and nitrogen has a Kp of 41. If the reaction is run at 400 K what would Kc be?