UPSC Combined Geo-Scientist, Mains · 2018 · Mains Paper II
Q11(b). EMF of Zn | ZnCl₂(m) | AgCl, Ag in terms of γ±
Question
Obtain the expression of e.m.f. (E) of the galvanic cell Zn | ZnCl₂(aq, m) | AgCl, Ag in terms of its standard e.m.f. (E°), the molality (m) of the electrolyte and its mean ionic activity coefficient (γ±).
Model answer
The free solution for 2018 answers questions 1, 2, 3, 4, 5, 6, 8, 12, 13 and 15, the ones picked in its time plan. This part is not answered on the site yet. New answers are announced on Telegram.
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CoversNernst equationmean ionic activity coefficientZnCl2 cellcell EMF
All parts of Question 11
- 11(a) Correct conditions for chemical equilibrium5 marks
- 11(b) EMF of Zn | ZnCl₂(m) | AgCl, Ag in terms of γ±5 marks
- 11(c) Bond dissociation energy from band convergence10 marks