Consider the reaction that was reported to be performed electrochemically:

(i) Traditionally, what reagent was used to carry out this reaction?
(ii) Is the reaction that was reported to be performed electrochemically more or less hazardous to the environment?

(i) H₂, Pt/C

(ii) It is less hazardous to the environment because it uses less chemicals and more energy in the form of heat to drive the reaction.

(i) Na, NH₃

(ii) It is more hazardous to the environment because it uses more chemicals and more energy in the form of electricity to drive the reaction.

(i) H₂, Pd/C

(ii) It is more hazardous to the environment because it uses high temperature and more energy in the form of electricity to drive the reaction. 

(i) H₂, Lindlar’s catalyst

(ii) It is less hazardous to the environment because it uses less toxic compounds and electricity to drive the reaction.