How many grams of citric acid and sodium citrate dihydrate must be added to 1L of water to produce a solution with pH 3.9 and a total solute concentration of 1 mM? (MW Salt = 294.09; MW Acid = 192.13)I found the answer below, but my calculation does not match it. Can you please show me in detail how the calculation from the image below was done? How the got the amount of citric acid and citrate? Current molarity:0.001 MAdjust the molarity of the solution by using theslider belowCurrent pH:3.9Adjust the pH of the solution by using the sliderbelowTable 1. Required componentsComponentAmountConcentrationSodium Citrate92.118dihydrate (mw:0.0003132 Mmg294.10 g/mol)Citric Acid (mw:131.90.0006868 M192.12 g/mol)mg1. Prepare 800 mL of distilled water in a suitablecontainer.2. Add 92.118 mg of Sodium Citrate dihydrate tothe solution.3. Add 131.9 mg of Citric Acid to the solution.4. Adjust solution to final desired pH using HCI

For a buffer solution- pH = pKa + log [Base/Acid] pKa of citric acid= 4.3

Answered: Table 1. Required components Component…

Chemistry: Principles and Practice

3rd Edition

ISBN:9780534420123

Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Chapter15: Solutions Of Acids And Bases

Section: Chapter Questions

Problem 15.130QE: A solution is made by dissolving 15.0 g sodium hydroxide in approximately 450 mL water. The solution...

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How many grams of citric acid and sodium citrate dihydrate must be added to 1L of water to produce a solution with pH 3.9 and a total solute concentration of 1 mM? (MW Salt = 294.09; MW Acid = 192.13)

I found the answer below, but my calculation does not match it. Can you please show me in detail how the calculation from the image below was done? How the got the amount of citric acid and citrate?

Current molarity:
0.001 M
Adjust the molarity of the solution by using the
slider below
Current pH:
3.9
Adjust the pH of the solution by using the slider
below
Table 1. Required components
Component
Amount
Concentration
Sodium Citrate
92.118
dihydrate (mw:
0.0003132 M
mg
294.10 g/mol)
Citric Acid (mw:
131.9
0.0006868 M
192.12 g/mol)
mg
1. Prepare 800 mL of distilled water in a suitable
container.
2. Add 92.118 mg of Sodium Citrate dihydrate to
the solution.
3. Add 131.9 mg of Citric Acid to the solution.
4. Adjust solution to final desired pH using HCI

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