Solved

-The Concentration of an Aqueous Solution of Fe2+ Can Be

Question 99

Multiple Choice

  -The concentration of an aqueous solution of Fe<sup>2+</sup> can be determined by a redox titration with aqueous bromate ion,BrO<sub>3</sub>⁻: 6 Fe<sup>2+</sup> (aq) + BrO<sub>3</sub>⁻ (aq) + 6 H⁺ (aq) → 6 Fe<sup>3+</sup> (aq) + Br⁻ (aq) + 3 H<sub>2</sub>O (l)  Assume that the black spheres in the buret represent BrO<sub>3</sub>⁻ ions,the gray spheres in the flask represent Fe<sup>2+</sup> ions,the concentration of the BrO<sub>3</sub>⁻ ions in the buret is 0.120 M,and the volumes in the buret and the flask are identical.What is the concentration of the Fe<sup>2+</sup> in the flask,and what fraction of the BrO<sub>3</sub>⁻ solution in the buret must be added to the flask to react with all the Fe<sup>2+</sup> ions? A) 0.0200 M Fe<sup>2+</sup>;1/18 of the BrO<sub>3</sub>⁻ must be added. B) 0.0200 M Fe<sup>2+</sup>;1/3 of the BrO<sub>3</sub>⁻ must be added. C) 0.0400 M Fe<sup>2+</sup>;1/18 of the BrO<sub>3</sub>⁻ must be added. D) 0.0400 M Fe<sup>2+</sup>;1/3 of the BrO<sub>3</sub>⁻ must be added.
-The concentration of an aqueous solution of Fe2+ can be determined by a redox titration with aqueous bromate ion,BrO3⁻: 6 Fe2+ (aq) + BrO3⁻ (aq) + 6 H⁺ (aq) → 6 Fe3+ (aq) + Br⁻ (aq) + 3 H2O (l)
Assume that the black spheres in the buret represent BrO3⁻ ions,the gray spheres in the flask represent Fe2+ ions,the concentration of the BrO3⁻ ions in the buret is 0.120 M,and the volumes in the buret and the flask are identical.What is the concentration of the Fe2+ in the flask,and what fraction of the BrO3⁻ solution in the buret must be added to the flask to react with all the Fe2+ ions?


A) 0.0200 M Fe2+;1/18 of the BrO3⁻ must be added.
B) 0.0200 M Fe2+;1/3 of the BrO3⁻ must be added.
C) 0.0400 M Fe2+;1/18 of the BrO3⁻ must be added.
D) 0.0400 M Fe2+;1/3 of the BrO3⁻ must be added.

Correct Answer:

verifed

Verified

Unlock this answer now
Get Access to more Verified Answers free of charge

Related Questions

Unlock this Answer For Free Now!

View this answer and more for free by performing one of the following actions

qr-code

Scan the QR code to install the App and get 2 free unlocks

upload documents

Unlock quizzes for free by uploading documents