You are presented with a mystery as part of your practical experiment. You have a solution of Pb(NO3)2 that has a worn label making it impossible to read. You know the concentration is below 1.0 M as you can make out "0.xxx" at the beginning of the label. In order to determine the concentration, you decide to precipitate out the lead in the solution asPbSO4. If you added 1.0 mL of the unknown Pb(NO3)2 to a test tube, what is the amount of 0.64M H2SO4 in mL you will need to add to be sure the H2SO4 is the excess reagent? NOTE: H2SO4 is expensive so you should not use more than absolutely necessary. mL H2SO4 Needed =

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...
icon
Related questions
icon
Concept explainers
Question
Practical 2
Homework Answered Due May 30th, 1:30 PM
You are presented with a mystery as part of your practical experiment. You have a solution of Pb(NO3)2
that has a worn label making it impossible to read. You know the concentration is below 1.0 M as you can make out "0.xxx" at the
beginning of the label. In order to determine the concentration, you decide to precipitate out the lead in the solution asPbSO4. If
you added 1.0 mL of the unknown Pb(NO3)2
to a test tube, what is the amount of 0.64M H2SO4 in mL you will need to add to be sure the H2SO4 is the excess reagent? NOTE:
H2SO4 is expensive so you should not use more than absolutely necessary.
mL H2SO4 Needed =
Type your numeric answer and submit
1.7
Answered - Incorrect. 0 attempt left
Practical 3
Homework Answered. Due May 30th, 1:30 PM
Type your numeric answer and submit
X
You are incorrect
After a precipitation reaction with 0.64M H2SO4 was completed, you centrifuge the sample, dry and weigh it. The ppt is found to
weigh 0.12 grams. Based on this mass, what was the original concentration of the unknown Pb(NO3)2 solution in mol/L? Answer to
3 sf.
[Pb(NO3)2] =
0.376
Resubmit
X
You are incorrect
Transcribed Image Text:Practical 2 Homework Answered Due May 30th, 1:30 PM You are presented with a mystery as part of your practical experiment. You have a solution of Pb(NO3)2 that has a worn label making it impossible to read. You know the concentration is below 1.0 M as you can make out "0.xxx" at the beginning of the label. In order to determine the concentration, you decide to precipitate out the lead in the solution asPbSO4. If you added 1.0 mL of the unknown Pb(NO3)2 to a test tube, what is the amount of 0.64M H2SO4 in mL you will need to add to be sure the H2SO4 is the excess reagent? NOTE: H2SO4 is expensive so you should not use more than absolutely necessary. mL H2SO4 Needed = Type your numeric answer and submit 1.7 Answered - Incorrect. 0 attempt left Practical 3 Homework Answered. Due May 30th, 1:30 PM Type your numeric answer and submit X You are incorrect After a precipitation reaction with 0.64M H2SO4 was completed, you centrifuge the sample, dry and weigh it. The ppt is found to weigh 0.12 grams. Based on this mass, what was the original concentration of the unknown Pb(NO3)2 solution in mol/L? Answer to 3 sf. [Pb(NO3)2] = 0.376 Resubmit X You are incorrect
Expert Solution
steps

Step by step

Solved in 3 steps with 6 images

Blurred answer
Knowledge Booster
Ionic Equilibrium
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
Chemistry
Chemistry
Chemistry
ISBN:
9781305957404
Author:
Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:
Cengage Learning
Chemistry
Chemistry
Chemistry
ISBN:
9781259911156
Author:
Raymond Chang Dr., Jason Overby Professor
Publisher:
McGraw-Hill Education
Principles of Instrumental Analysis
Principles of Instrumental Analysis
Chemistry
ISBN:
9781305577213
Author:
Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:
Cengage Learning
Organic Chemistry
Organic Chemistry
Chemistry
ISBN:
9780078021558
Author:
Janice Gorzynski Smith Dr.
Publisher:
McGraw-Hill Education
Chemistry: Principles and Reactions
Chemistry: Principles and Reactions
Chemistry
ISBN:
9781305079373
Author:
William L. Masterton, Cecile N. Hurley
Publisher:
Cengage Learning
Elementary Principles of Chemical Processes, Bind…
Elementary Principles of Chemical Processes, Bind…
Chemistry
ISBN:
9781118431221
Author:
Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
Publisher:
WILEY