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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?

Introduction to Chemical Engineering Thermodynamics
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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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?
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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