Answered: A 1.458 g primary-standard grade Na2CO3…

A 1.458 g primary-standard grade Na2CO3 (MW = 105.99 g/mol) was used to standardize an HCl solution. Solve for the molarity of HCl if 24.81 mL of HCl was used to reach the endpoint.

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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Question

A 1.458 g primary-standard grade Na2CO3 (MW = 105.99 g/mol) was used to standardize an HCl solution. Solve for the molarity of HCl if 24.81 mL of HCl was used to reach the endpoint.

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Step 1: Stoichiometry of the reaction

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Step 2: Calculation of mole of sodium carbonate

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Step 3: Calculation of molarity of HCl

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