Which of the following reactions would be capable of doing work under standard conditions and at 25°C ?
i. Cl₂CCOOH(aq) H'(aq) + ClCCOO (aq)
ii. AgCl(s) Ag"(aq) + Cl(aq)
iii. CH3NH2(aq) + H2O() CH₂NH₂"(aq) + OH(aq)
iv. Cu² (aq) + 4 NH(aq) [Cu(NH)]*(aq)
A. i and ii only
B. i and ii only
C. i, ii, and iii only
D. iv only
E. ii and iv only