20 mL of 0.02 M K 2 Cr 2 O 7 solution is used for the titration of 10 mL of Fe 2+ solution in the acidic medium. The molarity of Fe 2+ solution is ______×10 –2 M. (Nearest integer)

Applying the law of equivalence, milliequivalents of Fe 2+ = milliequivalents of K 2 Cr 2 O 7 10 × 1 × M = 20 × 6 × .02 M = 24 × 10 –2 M &there4; Answer will be 24.

Question:

20 mL of 0.02 M K₂Cr₂O₇ solution is used for the titration of 10 mL of Fe²⁺ solution in the acidic medium. The molarity of Fe²⁺ solution is ______×10^–2 M. (Nearest integer)

Updated On: Sep 24, 2024

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Correct Answer: 24

Solution and Explanation

Applying the law of equivalence,
milliequivalents of Fe²⁺= milliequivalents of K₂Cr₂O₇10 × 1 × M = 20 × 6 × .02
M = 24 × 10^–2 M
∴ Answer will be 24.

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20 mL of 0.02 M K2Cr2O7 solution is used for the titration of 10 mL of Fe2+ solution in the acidic medium. The molarity of Fe2+ solution is ______×10–2 M. (Nearest integer)