For a reaction,
N₂(g) + 3H₂(g) $$ \to $$ 2NH₃(g) ;
identify dihydrogen (H₂) as a limiting reagent in the following reaction mixtures.

The standard Gibbs energy for the given cell reaction in kJ mol^–1 at 298 K is :

Zn(s) + Cu²⁺ (aq) $$ \to $$ Zn²⁺ (aq) + Cu (s),

E° = 2 V at 298 K

(Faraday's constant, F = 96000 C mol^–1)

The increasing order of reactivity of the following compounds towards aromatic electrophilic substitution reaction is :

Among the following, the set of parameters that represents path function, is :
(A) q + w
(B) q
(C) w
(D) H–TS