Approximately 6 mL of concentrated perchloric acid (72%) was transferred to a bottle and diluted with about 1.0 L of water. A sample containing 250.0 mg of primary standard sodium tetraborate (Na2B4O7 .10H2O, FW= 381.42 g/mol) was dissolved in 50.00 mL water and required 27.25 mL of the HClO4 solution to reach the methyl red end point. A 25.00 mL solution of an unknown NH3 sample required 13.24 mL of the HClO4 solution. Calculate the molarity of the NH3? Use the factor label method in answering.

Approximately 6 mL of concentrated perchloric acid (72%) was transferred to a bottle and diluted with about 1.0 L of water. A sample containing 250.0 mg of primary standard sodium tetraborate (Na2B4O7 .10H2O, FW= 381.42 g/mol) was dissolved in 50.00 mL water and required 27.25 mL of the HClO4 solution to reach the methyl red end point. A 25.00 mL solution of an unknown NH3 sample required 13.24 mL of the HClO4 solution. Calculate the molarity of the NH3? Use the factor label method in answering.

Introductory Chemistry For Today

8th Edition

ISBN:9781285644561

Author:Seager

Publisher:Seager

Chapter7: Solutions And Colloids

Section: Chapter Questions

Problem 7.39E

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