C. First, decide the total volume to make of each tube – keep in mind measurement accuracy (consider preparing 20% more solution than what you will use). D. Then, calculate how much stock, water and final concentration of each. E. Then, instead of doing a serial dilution, calculate making each of the above solutions using the weight/volume % solution method.
C. First, decide the total volume to make of each tube – keep in mind measurement accuracy (consider preparing 20% more solution than what you will use). D. Then, calculate how much stock, water and final concentration of each. E. Then, instead of doing a serial dilution, calculate making each of the above solutions using the weight/volume % solution method.
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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I do not understands parts C through E
Transcribed Image Text:Solutions Prep Workshop
In-class Problem 3: (do at home for next week)
A. Calculate how to make 10 ml of a 7.5% methylene blue stock solution (from solid
powder).
B. Calculate how to make a series of 1:10 dilutions of this stock. Imagine you'll use
5 ml of each dilution for your experiment. Calculate the final concentrations of
each tube.
tube 1: take some stock, dilute it 1:10 with some water in a new tube = #1
tube 2: take some of #1, dilute it 1:10 with some water in a new tube
tube 3: take some of #2, dilute it 1:10 with some water in a new tube
tube 4: take some of #3, dilute it 1:10 with some water in a new tube
C. First, decide the total volume to make of each tube – keep in mind measurement
accuracy (consider preparing 20% more solution than what you will use).
D. Then, calculate how much stock, water and final concentration of each.
E. Then, instead of doing a serial dilution, calculate making each of the above
solutions using the weight/volume % solution method.
F. Pros and Cons of serial dilution method vs W/V % method
Expert Solution
Step 1
C.
We need to use 5 mL of each dilution, and we need to prepare 20% more of each solution than this one.
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