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: Matter and Change
1st Edition
ISBN:9780078746376
Author:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom
Publisher:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom
Chapter18: Acids And Bases
Section: Chapter Questions
Problem 92A
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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.
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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