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f 15.8 M HNO3. umber 2 and 3 at ainimum mass of the line provided

f 15.8 M HNO3. umber 2 and 3 at ainimum mass of the line provided

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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A CHM 125 student perfomed the five step reaction to produce copper(I) chloride as outlined in the CHIM 125 laboratory manual. The chemical reactions carried out are shown below: 1. Cu(s) + 4HNO3(aq) 2. 2HNO3(aq) + Na2CO3(s) 3. Cu(NO3)2(aq) + NazCO3(s) 4. CUCO3(s) + 2HCI(aq) CUC2(aq) + H2O(E) + CO2(g) 5. CuCl2(aq) + Cu(s) Cu(NO3)2(aq) + 2NO2(g) + 2H2O(E) → H20(£) + CO2(g) + 2NaNO3(aq) → CuCO;(s) + 2NaNO3(aq) 2CuCI(s) The student carried out reaction number 1 by combining 1.034 g of Cu(s) and 5.0 mL of 15.8 M HNO3. The student then added 3.911 g of Na,C0:(s) to the mixture to carry out both reaction number 2 and 3 at the same time. Show that the 3.911g of Na,CO3 was in excess by calculating the minimum mass of NazCO3(s) actually needed for the second and third reactions. Write your final answer on the line provided at the bottomn of the page.
Transcribed Image Text:A CHM 125 student perfomed the five step reaction to produce copper(I) chloride as outlined in the CHIM 125 laboratory manual. The chemical reactions carried out are shown below: 1. Cu(s) + 4HNO3(aq) 2. 2HNO3(aq) + Na2CO3(s) 3. Cu(NO3)2(aq) + NazCO3(s) 4. CUCO3(s) + 2HCI(aq) CUC2(aq) + H2O(E) + CO2(g) 5. CuCl2(aq) + Cu(s) Cu(NO3)2(aq) + 2NO2(g) + 2H2O(E) → H20(£) + CO2(g) + 2NaNO3(aq) → CuCO;(s) + 2NaNO3(aq) 2CuCI(s) The student carried out reaction number 1 by combining 1.034 g of Cu(s) and 5.0 mL of 15.8 M HNO3. The student then added 3.911 g of Na,C0:(s) to the mixture to carry out both reaction number 2 and 3 at the same time. Show that the 3.911g of Na,CO3 was in excess by calculating the minimum mass of NazCO3(s) actually needed for the second and third reactions. Write your final answer on the line provided at the bottomn of the page.
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