Question

Write the Nernst equation and emf of the following cells at 298 K:

 (i) Mg(s) | Mg²⁺(0.001M) || Cu²⁺(0.0001 M) | Cu(s)

 (ii) Fe(s) | Fe²⁺(0.001M) || H⁺(1M)|H₂(g)(1bar) | Pt(s)

 (iii) Sn(s) | Sn²⁺(0.050 M) || H⁺(0.020 M) | H²(g) (1 bar) | Pt(s)

 (iv) Pt(s) | Br₂(l) | Br−(0.010 M) || H⁺(0.030 M) | H₂(g) (1 bar) | Pt(s). 

Answer 1

(i) For the given reaction, the Nernst equation can be given as: 

(ii) For the given reaction, the Nernst equation can be given as: 

(iii) For the given reaction, the Nernst equation can be given as: 

(iv) For the given reaction, the Nernst equation can be given as: