For each of the following reactions at constant pressure, determine whether the system does work on the surroundings, the surroundings does work on the system, or essentially no work is performed. f the following reactions at work done by the system work done on the system no work done 4 fe (s) + 3 o2 (g)→2 fe,03 (s) 2 cif, (g)→cl2 (g) + 3 f2 (g) nahco) (s) + hc, h,02 (aq)→ nac, h,o, (a+ho)+co, (g) ch, g)+20, g)co, )+2 h, o ()