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A sample of a crude grade of sodium hydroxide is sent to a laboratory to be tested for sodium hydroxide content. A 4.500 g sample is dissolved and diluted to 500 mL with water. A 25 mL sample of this solution is titrated with a 0.4838 molar hydrochloric acid solution and requires 19.39 mL to reach the equivalence point. How many moles of sodium hydroxide were in the 4.500 g sample? What mass of sodium hydroxide is this? What is the percent of sodium hydroxide in the crude sample?

A sample of a crude grade of sodium hydroxide is sent to a laboratory to be tested for sodium hydroxide content. A 4.500 g sample is dissolved and diluted to 500 mL with water. A 25 mL sample of this solution is titrated with a 0.4838 molar hydrochloric acid solution and requires 19.39 mL to reach the equivalence point. How many moles of sodium hydroxide were in the 4.500 g sample? What mass of sodium hydroxide is this? What is the percent of sodium hydroxide in the crude sample?

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Use floating decimal in your solutions but express all final answers to four (4) decimal places and enclose them in a box.

 

A sample of a crude grade of sodium hydroxide is sent to a laboratory to be tested for sodium hydroxide content. A 4.500 g sample is dissolved and diluted to 500 mL with water. A 25 mL sample of this solution is titrated with a 0.4838 molar hydrochloric acid solution and requires 19.39 mL to reach the equivalence point. How many moles of sodium hydroxide were in the 4.500 g sample? What mass of sodium hydroxide is this? What is the percent of sodium hydroxide in the crude sample?
Transcribed Image Text:A sample of a crude grade of sodium hydroxide is sent to a laboratory to be tested for sodium hydroxide content. A 4.500 g sample is dissolved and diluted to 500 mL with water. A 25 mL sample of this solution is titrated with a 0.4838 molar hydrochloric acid solution and requires 19.39 mL to reach the equivalence point. How many moles of sodium hydroxide were in the 4.500 g sample? What mass of sodium hydroxide is this? What is the percent of sodium hydroxide in the crude sample?
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