Iron (III) catalyses the reaction between iodide and persulphate ions, in which
A. Fe3+ oxidises the iodide ion
B. Fe3+ oxidises the persulphate ion
C. Fe2+ reduces the iodide ion
D. Fe2+ reduces the persulphate ion
Choose the most appropriate answer from the options given below:
1
B and C only
2
B only
3
A only
4
A and D only