10Which is incorrect for minimizing the decomposition of Sodium thiosulfate solutions O a. Adjust the pH (9-10) O b. Standard solutions of reagents are prepared under sterile conditions Oc. The presence of bactericides, such as chloroform, sodium benzoate O d. Standard solutions of reagents are prepared in absence of oxygen 3 + 24 In the reaction Cet+ + Fe2+ e Ce3+ + Fe3+ Knowing that Fe3+ + e ==> Fet2 P=0.767 V Ce** + e ==> Ce** [-1.70 V And Hydrogen reference electrode was used. If 10 ml of 0.2 M Fe*? was titrated against 0.2 M of Ce**, the E for this reaction upon adding 10.2 ml of Cet is: a. 0.99 V b. 1.70 V 4 C 1.10 V d. 1.60 V