2. If you prepared a 0.15 M CH.COH - 0.15 M CHCO Na buffer, would you expect the resulting buffer capacity t...

Question

Question

2. If you prepared a 0.15 M CH.COH - 0.15 M CHCO Na buffer, would you expect the resulting buffer capacity to be higher, lowe

c. Measure the pH of the Beaker #2 solution, via a pH meter, and record in data sheet. Part II: Dilute Buffer Solution In thi

Part I: Drute unter Volume CH.CO.H. ml. Molarity CH.CO:H, mole/L Beaker 10.0 mL 0.50 M Beaker 2 10.0 mL 0.50 M Moles CH3COH B

science chemistry

Add a comment Improve this question Transcribed image text

Answer 1

Answer #1

If you prepared a 0.15 M CH3COOH - 0.15 M CH3CO2Na buffer, the resulting buffer capacity would be expected to be the same as the buffer you prepared in Part II of this lab.

Explanation:

In Part II of this lab, moles of CH3COOH = 0.5 mol/L * (10/1000) L = 0.005 mol

And moles of CH3COONa = 0.5 mol/L * (10/1000) L = 0.005 mol

Now, pH = pKa + Log([CH3COONa]/[CH3COOH])

i.e. pH = 4.74 + Log(0.005/0.005)

i.e. pH = 4.74

The given buffer does also have the same pH. Hence, they have the same buffer capacity.

Add a comment

Answer 2

Similar Homework Help Questions

please answer, thank you! 2. If you prepared a 0.15 M CH3CO2H - 0.15 M CH3CO,Na...

please answer, thank you! 2. If you prepared a 0.15 M CH3CO2H - 0.15 M CH3CO,Na buffer, would you expect the resulting buffer capacity to be higher, lower, or the same as the buffer you prepared in Part II (0.25 M CH,CO2H-0.25 M CH3CO Na buffer) of this lab? Be specific and use your data, Part II: Dilute Buffer Volume of CH.CO.Il.ml Molarity of CH.CO. Hmolel Beaker #1 10.00 ml 50 M Beaker #2 10.00 ml 0.50 M 0 Moles...
4. Calculate the pH of a buffer solution prepared by mixing 10.0 mL of a 0.50 M CH,CO;H and 10.0 mL of a 0.50 M CHC...

4. Calculate the pH of a buffer solution prepared by mixing 10.0 mL of a 0.50 M CH,CO;H and 10.0 mL of a 0.50 M CHCO Na. Record this pH in Part II data sheet, Beaker #1 & N2 for Theoretical Initial pH. K for CHCOH = 1.8 x 10 at 25°C. a. Calculate the pH of the buffer solution upon addition of 0.25 mL of a 6.0 M HCL Record in Part Il data sheet, for Theoretical Final pH...
2. Calculate the pH of a solution prepared by diluting 0.25 mL of a 6.0 M HC red by diluting 0.25 mL of a 6.0 M HCl...

2. Calculate the pH of a solution prepared by diluting 0.25 mL of a 6.0 M HC red by diluting 0.25 mL of a 6.0 M HCl with water to a total 1.25 ml. Record this pH in Part I data sheet, Beaker #1 for Theoretical Final pH. 3. Calculate the pH of a solution prepared by dilutine 0.25 mL of a 6.0 M NaOH with water to a total volume of 20.25 mL. Record this pH in Part I...

3. Calculate the pH of a solution prepared by diluting 0.25 mL of a 6.0M NaOH with water to a total volume of 20.25...

3. Calculate the pH of a solution prepared by diluting 0.25 mL of a 6.0M NaOH with water to a total volume of 20.25 mL. Record this pH in Part I data sheet, Beaker #2 for Theoretical Final pH. 4. Calculate the pH of a buffer solution prepared by mixing 10.0 mL of a 0.50 M CH,CO2H and 10.0 mL of a 0.50 M CH,CO2Na. Record this pH in Part II data sheet, Beaker i#1 & #2 for Theoretical Initial...
Calculate the pH of a bit a buller solution prepared by mixing 100 mlofa 10 M...

Calculate the pH of a bit a buller solution prepared by mixing 100 mlofa 10 M CH.CO.H and 100 mL of a 1.0 M CHCO Na. . Record this all in Part III data shss Beaker 1 & 2 for Thco Initial pH. K for CH,CO,H-1.8 x 109 at 25°C. a. Calculate the pH of the buffer solution upon addition of 0.25 mL of a 6.0 M HCI. Record in Part III data sheet, for Theoretical Final pH Beaker 1....
1) Find the Difference between measured pH and calculated theoretical pH of solutions 1-6 for [HC2H3O2]...

1) Find the Difference between measured pH and calculated theoretical pH of solutions 1-6 for [HC2H3O2] (M) and [C2H3O2−] (M) 2) Find the Difference between measured pH and calculated theoretical pH of solutions 1-6. 3) In this experiment, we define the buffer capacity of a buffer as the number of drops of either 3.0 M HCl or 3.0 M NaOH needed before the pH of the solution changes by more than 0.5 pH units. For example, if the pH of...

buffer is HC2H3O2/NaC2H3O2 difference in PH: big change when added to buffer. small change when added...

buffer is HC2H3O2/NaC2H3O2 difference in PH: big change when added to buffer. small change when added to water. why? why such a bug change when you add an acud or base to water but not to butfer? 1. a) Describe the difference in observed pH changes upon adding a small amount of strong acid or base to 25.0 mL of water vs to 25.0 mL of your buffer. b) Explain why there was a difference. 6.0M HC,H,O, is corrosive. Prevent...
Say, for example, that you had prepared a Buffer C, in which you mixed 8.203 g of sodium acetate,...

Say, for example, that you had prepared a Buffer C, in which you mixed 8.203 g of sodium acetate, NaC2H3O2, with 100.0 mL of 1.0 M acetic acid. a. What would be the initial pH of Buffer C? pH of Buffer C = 4.74, pH of Buffer B = 4.74 b. If you add 5.0 mL of 0.5 M NaOH solution to 20.0 mL each of Buffer B and Buffer C, which buffer’s pH would change less? Explain. Buffer ABufferB...
A buffer is prepared by adding 150 mL of 1.0 M NaOH to 250 mL of...

A buffer is prepared by adding 150 mL of 1.0 M NaOH to 250 mL of 1.0 M NaH2PO4. How many moles of HCI must be added to this buffer solution to change the pH by 0.40 units? Assume the total volume remains unchanged at 400 mL. For H2PO4, K = 6.3 x 10-8 0.013 mol 0.25 mol (Your answer) 0.50 mol 0.057 mol (Correct answer) 0.031 mol

I don't understand what calculations I would have made to create the buffer solution from Part...

I don't understand what calculations I would have made to create the buffer solution from Part D of the lab. I understood the procedures I took to create the solution but when the report asks to show the calculations used to prepare the buffer solution I am not sure other than mixing the volumes indicated in the procedures section. Thank you pH of Butter Assigned by Instructor 5.12. Measured pH of Assigned B r .9 (Read the procedural Show the...

2. If you prepared a 0.15 M CH.COH - 0.15 M CHCO Na buffer, would you expect the resulting buffer capacity t...

Homework Answers

Add Answer to:
2. If you prepared a 0.15 M CH.COH - 0.15 M CHCO Na buffer, would you expect the resulting buffer capacity t...

Post as a guest

Earn Coins

please answer, thank you! 2. If you prepared a 0.15 M CH3CO2H - 0.15 M CH3CO,Na...

4. Calculate the pH of a buffer solution prepared by mixing 10.0 mL of a 0.50 M CH,CO;H and 10.0 mL of a 0.50 M CHC...

2. Calculate the pH of a solution prepared by diluting 0.25 mL of a 6.0 M HC red by diluting 0.25 mL of a 6.0 M HCl...

3. Calculate the pH of a solution prepared by diluting 0.25 mL of a 6.0M NaOH with water to a total volume of 20.25...

Calculate the pH of a bit a buller solution prepared by mixing 100 mlofa 10 M...

1) Find the Difference between measured pH and calculated theoretical pH of solutions 1-6 for [HC2H3O2]...

buffer is HC2H3O2/NaC2H3O2 difference in PH: big change when added to buffer. small change when added...

Say, for example, that you had prepared a Buffer C, in which you mixed 8.203 g of sodium acetate,...

A buffer is prepared by adding 150 mL of 1.0 M NaOH to 250 mL of...

I don't understand what calculations I would have made to create the buffer solution from Part...

2. If you prepared a 0.15 M CH.COH - 0.15 M CHCO Na buffer, would you expect the resulting buffer capacity t...

Homework Answers

Add Answer to: 2. If you prepared a 0.15 M CH.COH - 0.15 M CHCO Na buffer, would you expect the resulting buffer capacity t...

Post as a guest

Earn Coins

Add Answer to:
2. If you prepared a 0.15 M CH.COH - 0.15 M CHCO Na buffer, would you expect the resulting buffer capacity t...