A2. answer each of the following: (i) explain using vsert the difference in geometries of co2 and h20. [4 marks] (ii) write the electronic configuration for mg, f and fe2+. [6 marks] (iii) zn(s) + cuso4 (aq) znso4(aq) + cu(s) (a) identify which components in the above reaction are oxidised and which are reduced. explain your answer. [5 marks] (b) if the reaction as shown is spontaneous which metal is the anode and which is the cathode? [3 marks] (iv) in an electrolysis reaction, how long will it take to deposit 1.7 g of silver metal if the system works at 3 amps? [4 marks] (v) calculate the ph of a 500 ml solution of 0.0854g naoh at 25 °c. [3 marks]