Question

How would you prepare a .100 L of 50mM succinate buffer at pH 3.85 using solid...

How would you prepare a .100 L of 50mM succinate buffer at pH 3.85 using solid disodium suddinate, DI water and either 1.00 M NaOH or 1.00 M HCL. The formula weight of disodium succiante is 162 g/mol. pka1 = 4.21; pka2 = 5.64.

Science   Chemistry   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

Let , and represents succinic acid, monosodium succinic acid and disodium succinic acid respectively.

0.100 L of 50mM succinate buffer corresponds to

Let x moles of NaHA and 0.005-x moles of H2A are present.

Thus 0.00152 moles of NaHA and moles of H2A are present.

0.00348 moles of H2A are obtained when 0.00348 moles of Na2A react with moles of HCl.

0.00152 moles of NaHA are obtained when 0.00152 moles of Na2A react with 0.00152 moles of HCl.

Total number of moles of Na2A required

The formula weight of disodium succiante is 162 g/mol.

Mass of disodium succinate

Total number of moles of HCl required

The volume of 1.00 M HCl required

The volume of 1.00 M HCl required

0.81 g of disodium succinate is dissolved in sufficient amount of water, 8.5 mL of 1.00 M HCl is added slowly and the mixture is shaken. Then it is diluted to mark in 100 ml standard volumetric flask.

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
How many grams of sodium succinate (formula weight 140 g/mol) and disodium succinate (formula weight 162...
How many grams of sodium succinate (formula weight 140 g/mol) and disodium succinate (formula weight 162 g/mol) must be added to 1 L of water to produce a solution with pH 6.0 and a total solute concentration of 50 mM? Pka=5.64
A buffer prepared by dissolving oxalic acid dihydrate (H2C2O4·2H2O) and disodium oxalate (Na2C2O4) in 1.00 L...
A buffer prepared by dissolving oxalic acid dihydrate (H2C2O4·2H2O) and disodium oxalate (Na2C2O4) in 1.00 L of water has a pH of 5.043. How many grams of oxalic acid dihydrate (MW = 126.07 g/mol) and disodium oxalate (MW = 133.99 g/mol) were required to prepare this buffer if the total oxalate concentration is 0.195 M? Oxalic acid has pKa values of 1.250 (pKa1) and 4.266 (pKa2).
How would you prepare 1 L of a 0.100 M phosphate buffer at pH 7.02 using...
How would you prepare 1 L of a 0.100 M phosphate buffer at pH 7.02 using crystalline Na2HPO4 and a solution of 1.0 M HCl?
Calculate the pH of 1.00 L of the buffer 0.95 M CH3COONa/0.98 M CH3COOH before and...
Calculate the pH of 1.00 L of the buffer 0.95 M CH3COONa/0.98 M CH3COOH before and after the addition of the following species. (Assume there is no change in volume.) (a) pH of starting buffer: (b) pH after addition of 0.070 mol NaOH: (c) pH after further addition of 0.126 mol HCl:
How would you prepare a 500mL of 100mM phosphate buffer at pH 7.2 if you have...
How would you prepare a 500mL of 100mM phosphate buffer at pH 7.2 if you have only solid Na3PO4 and 1M HCL and 1M NaOH (may not use all reagents). Find mass of Na2HPO4, Volume 1M HCL, and Volume 1M NaOH
describe how you would prepare exactly 100 mL of .100 M picolinate buffer, ph 5.50. possible...
describe how you would prepare exactly 100 mL of .100 M picolinate buffer, ph 5.50. possible starting materials are pure picolinic acid (FW=123.11), 1.0 M HCl, and 1 M NaOH. Approximately how many milliliters of HCl and NaOH will be required?
You are asked to prepare 1.2 l of a 0.05 M tris buffer at pH= 7.8....
You are asked to prepare 1.2 l of a 0.05 M tris buffer at pH= 7.8. You start with the conjugate base form of tris (121 g/mol). How many grams of tris must you weigh out? How many ml of 6 M HCl (a strong acid) must you add to reach pH=7.8? The pKa for tris is 8.1.
a) Describe how to prepare a 0.50 L of 0.10 M imidazole buffer, pH 7.50, starting...
a) Describe how to prepare a 0.50 L of 0.10 M imidazole buffer, pH 7.50, starting with imidazole hydrochloride. Would you use NaCl or HCl to bring the pH to 7.50? b) Starting with imidazole, would you need NaOH to bring the pH to 7.50?
Describe the preparation of 1 L of 0.100 M acetate buffer, pH 5.3, if you have...
Describe the preparation of 1 L of 0.100 M acetate buffer, pH 5.3, if you have 0.100 M stock solution of acetic acid, pKa 4.52. You also have stock solution of 1.00 M NaOH and 1.00 M HCl. Determine whether you need NaOH or HCl to make the buffer and how much should be added?
Prepare 100.0 mL of a 1.00 M pH 5.00 buffer using solid sodium acetate (FW =...
Prepare 100.0 mL of a 1.00 M pH 5.00 buffer using solid sodium acetate (FW = 82.031 g mol–1 ) and 6.00 M aqueous acetic acid (Ka = 1.78 x 10–5 ). How many mL of acetic acid and how many g of sodium acetate are needed? So far I have: pka=4.75 5= 4.75 +log [A]/[HA] .25= log [A]/[HA] 1.78=[A]/[HA]
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT