Galvanic Cell

VITEEE 2015 Guidance › Physical Chemistry questions › Galvanic Cell

In a galvanic cell with Fe rod as cathode and Cr as anode and their sulphate salt solutions as electrolytes,if the salt bridge is replaced by a copper wire,then will E^Â°_cell drop to zero?why?

SRP of Fe =-0.45V
SRP of Cr = -0.75V

#Chemistry #Physical Chemistry

UP 0 DOWN 0 0 2
Post on FacebookPost anonymously?

2 Answers

11

Mani Pal Singh ·2009-03-16 19:45:12

E=E₀-RT/NF ln[A₀/A]

E₀=0.3V

I THINK BASICALLY THAT WITH THE CHANGE OF SALT BRIDGE( USED 4 BETTER MOVEMENT OF IONS) WITH A COPPER WIRE THE E₀ MAY DROP TO ZERO AS THE CELL WILL BECOME USELESS[1]

I MAY BE WRONG[2]

UP 0 DOWN 0
Post on FacebookPost anonymously?

39

Dr.House ·2009-03-17 05:38:02

here both iron and chromium can displace copper........

UP 0 DOWN 0
Post on FacebookPost anonymously?

Your Answer

Basic Integral Calculus Operators Symbols Matrix Cases

√ √ || {} [] () → ~ ^ x x x → → ln log lg lim lim cos sin tan cot arcsin arccos arctan

∫ ∫ ∫ ∫ ∫ ∬ ∬ ∬ ∬ ∬ ∭ ∭ ∭ ∭ ∭ ⨌ ⨌ ⨌ ⨌ ⨌

∑ ∑ ∑ ∑ ∑ ∮ ∮ ∮ ∮ ∮ ∏ ∏ ∏ ∏ ∏ ∐ ∐ ∐ ∐ ∐

+ - × ÷ ± ∓ = ∪ ∩ ≠ ∼ ≈ ∅ ∀ ∃ ∈ ∋ ∝ ≤ ≥ ≃ ≅ ≡ < > ≪ ≫ ⊂ ∉ ⊃ ⊆ ⊇ ⇒ ⇐ ⇔ ⇒ ⇐ ⇔ ⇑ ⇓ ⇕ → ← ↔ → ← ↔ ↑ ↓ ↕ ↖ ↗ ↘ ↙ ↪ ↩ ⇀ ↼ ⇁ ↽

° ∂ ∞ α β γ δ θ λ μ ν ξ π ρ σ φ ω ε ƒ κ τ υ Γ Δ Λ Σ Π Ω