In 1899 the German chemist Ludwig Mond developed a process for purifying nickel by convert...

In 1899 the German chemist Ludwig Mond developed a process for purifying nickel by converting it to the volatile nickel tetracarbonyl [Ni(CO)4] (b.p. = 42.2°C):

(a) Describe how you can separate nickel and its solid impurities, (b) How would you recover nickel? [ for Ni(CO)4 is −602.9 kJ/mol.]