Question 2 (a) Assume Co2+=103 mole/litre in solution, temperature 25C and H2 partial pressure =1atm,O2 partial pressure =1atm, answer the following questions: (i) Calculate the EH for the equilibrium CoCo2+ at pH=1.8 (10 marks) (ii) Calculate the EH for the equilibrium CoCo(OH)2 at pH=1.8 (10 marks) (b) Assume [Co2+]=102 mole/litre, calculate logPO2 at pH=1 for the reaction 2Co+4H++O22Co2++2H2O (10 marks) Data: R=8.314Jmol1K1,T=298K