Multiple Choice
A solution contains [Ba2+] = 5.0 × 10-5 M, [Ag+] = 3.0 × 10-5 M, and [Zn2+] = 2.0 × 10-7 M. Sodium oxalate is slowly added so that [C2O42-] increases. ![A solution contains [Ba<sup>2+</sup>] = 5.0 × 10<sup>-5</sup> M, [Ag<sup>+</sup>] = 3.0 × 10<sup>-5</sup> M, and [Zn<sup>2+</sup>] = 2.0 × 10<sup>-7</sup> M. Sodium oxalate is slowly added so that [C<sub>2</sub>O<sub>4</sub><sup>2-</sup>] increases. What is the concentration of the first cation to precipitate when the second cation just begins to precipitate? A) 1.3 × 10<sup>-6</sup> B) 2.2 × 10<sup>-6</sup> C) 5.0 × 10<sup>-5</sup> D) 1.35 × 10<sup>-9</sup> E) 1.1 × 10<sup>-11</sup>](https://d2lvgg3v3hfg70.cloudfront.net/TB2799/11ecd502_5d92_4333_a1d6_ed3bbfdffa46_TB2799_11.jpg)
What is the concentration of the first cation to precipitate when the second cation just begins to precipitate?
A) 1.3 × 10-6
B) 2.2 × 10-6
C) 5.0 × 10-5
D) 1.35 × 10-9
E) 1.1 × 10-11
Correct Answer:
Verified
Correct Answer:
Verified
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