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07.12.2019 •
Chemistry
Calculate the cd^2+ concentration in the following cell if ecell = 0.23
cd | cd^2+ (x m) || ni^2+ (1.00 m) | ni
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Ответ:
Explanation:
We must use the Nernst equation
Step 1. Calculate E°
Anode: Cd ⟶ Cd²⁺(x mol·L⁻¹) + 2e⁻; E° = +0.4030 V
Cathode: Ni²⁺ (1.00 mol·L⁻¹) + 2e⁻ ⟶ Ni; E° = - 0.257 V
Overall: Ni²⁺(1.00 mol·L⁻¹) + Cd ⟶ Ni + Cd²⁺ (x mol·L⁻¹); E° = 0.146 V
Step 2. Calculate Q
3. Calculate [Cd²⁺]
Ответ:
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Explanation:
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