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4. In standardizing H2SO4 as a titrant, a 0.4512-g of primary-standard-grade Na2CO3 required 36.44 mL of the H2SO4 solution to reach the endpoint in the reaction: Co2- + 2 H* → H20 + CO:(g) a. How many moles of Na;CO3 (106 g/mol) is present? b. From your answer in a, how many moles of CO32- is present? C. From your answer in b, how many moles of H- is needed to completely neutralize CO32-?

4. In standardizing H2SO4 as a titrant, a 0.4512-g of primary-standard-grade Na2CO3 required 36.44 mL of the H2SO4 solution to reach the endpoint in the reaction: Co2- + 2 H* → H20 + CO:(g) a. How many moles of Na;CO3 (106 g/mol) is present? b. From your answer in a, how many moles of CO32- is present? C. From your answer in b, how many moles of H- is needed to completely neutralize CO32-?

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
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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4. In standardizing H2SO4 as a titrant, a 0.4512-g of primary-standard-grade NazCO3 required 36.44 mL of the H2SO4 solution to reach the endpoint in the reaction: Co32- + 2 H* → H20 + CQzlg) а. How many moles of NazCO3 (106 g/mol) is present? b. From your answer in a, how many moles of CO32- is present? C. From your answer in b, how many moles of H+ is needed to completely neutralize CO32-? From your answer in c, how many moles of H2SO4 is required? d. What is the concentration of the H2SO4 titrant?
Transcribed Image Text:4. In standardizing H2SO4 as a titrant, a 0.4512-g of primary-standard-grade NazCO3 required 36.44 mL of the H2SO4 solution to reach the endpoint in the reaction: Co32- + 2 H* → H20 + CQzlg) а. How many moles of NazCO3 (106 g/mol) is present? b. From your answer in a, how many moles of CO32- is present? C. From your answer in b, how many moles of H+ is needed to completely neutralize CO32-? From your answer in c, how many moles of H2SO4 is required? d. What is the concentration of the H2SO4 titrant?
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