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What Is the Concentration of Al3+(aq)in the Following Cell at 25

Question 17

Multiple Choice

What is the concentration of Al3+(aq) in the following cell at 25 °C if the cell voltage is 1.486 V?
Al(s) ∣ Al3+(aq,?) What is the concentration of Al<sup>3+</sup>(aq) in the following cell at 25 °C if the cell voltage is 1.486 V? Al(s) ∣ Al<sup>3+</sup>(aq,?) Sn<sup>2+</sup>(aq,3.21 × 10<sup>-4</sup> M) ∣ Sn(s) Al<sup>3+</sup>(aq) + 3 e<sup>-</sup> → Al(s) E° = -1.676 V Sn<sup>2+</sup>(aq) + 2 e<sup>-</sup> → Sn(s) E° = -0.137 V A) 2.8 × 10<sup>-3</sup> M B) 1.6 × 10<sup>-5</sup> M C) 4.5 × 10<sup>-5</sup> M D) 2.4 × 10<sup>-2</sup> M E) 7.8 × 10<sup>-6</sup> M Sn2+(aq,3.21 × 10-4 M) ∣ Sn(s)
Al3+(aq) + 3 e- → Al(s) E° = -1.676 V
Sn2+(aq) + 2 e- → Sn(s) E° = -0.137 V


A) 2.8 × 10-3 M
B) 1.6 × 10-5 M
C) 4.5 × 10-5 M
D) 2.4 × 10-2 M
E) 7.8 × 10-6 M

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