How would you prepare 100ml of 0.5m solution using stock solution?   please explain your answer

Fundamentals Of Analytical Chemistry
9th Edition
ISBN:9781285640686
Author:Skoog
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Chapter7: Statistical Data Treatment And Evaluation
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Problem 7.27QAP
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How would you prepare 100ml of 0.5m solution using stock solution?  

please explain your answer

Introduction
A 1.0 M solution contains 1 mole of that substance in 1 liter of solution, and a 1.0 N solution contains
1 equivalent weight of substance per liter of solution.
Since the molecular weights of Na = 22.99 and Cl = 35.45
For NaCl, one mole = 1 equivalent weight = 58.44 g
%3D
Therefore 1M solution = 58.44 gm of NaCl dissolved in 1 liter of distilled water or
5.844 gm of NaCl dissolved in 100 ml of distilled water
Transcribed Image Text:Introduction A 1.0 M solution contains 1 mole of that substance in 1 liter of solution, and a 1.0 N solution contains 1 equivalent weight of substance per liter of solution. Since the molecular weights of Na = 22.99 and Cl = 35.45 For NaCl, one mole = 1 equivalent weight = 58.44 g %3D Therefore 1M solution = 58.44 gm of NaCl dissolved in 1 liter of distilled water or 5.844 gm of NaCl dissolved in 100 ml of distilled water
Solution A
1. Using a pipette pump, and a 10ml pipette, transfer 10ml of the stock solution to another
volumetric flask
2. Make up to the 100ml mark with distilled water, stopper the flask and shake well.
Since this a ten times dilution the, Molarity of this solution is
Solution B
1. Using a pipette pump, and a 10ml pipette, transfer 10ml of the Solution A to another
volumetric flask
2. Make up to the 100ml mark with distilled water, stopper the flask and shake well.
Since this a ten times dilution the, Molarity of this solution is =
M
Transcribed Image Text:Solution A 1. Using a pipette pump, and a 10ml pipette, transfer 10ml of the stock solution to another volumetric flask 2. Make up to the 100ml mark with distilled water, stopper the flask and shake well. Since this a ten times dilution the, Molarity of this solution is Solution B 1. Using a pipette pump, and a 10ml pipette, transfer 10ml of the Solution A to another volumetric flask 2. Make up to the 100ml mark with distilled water, stopper the flask and shake well. Since this a ten times dilution the, Molarity of this solution is = M
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