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.
Homework Answers
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Say, for example, that you had prepared a Buffer C, in which you mixed 8.203 g of sodium acetate,...
5. Say, for example, that you had prepared a Buffer X, in which you mixed 8.203 g of sodium acetate, NAC2H302, with...
5. Say, for example, that you had prepared a Buffer X, in which you mixed 8.203 g of sodium acetate, NAC2H302, with 100.0 mL of 1.0 M acetic acid. What would be the initial pH of Buffer X? I
Say for example, that you had prepared a Buffer C, in which you mixed 8.203 g...
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. 1A. What would be the initial pH of Buffer C 1B. If you add 5.0 mL of 0.5 M NaOH solution to 20.0 mL each of Buffer B( initial pH of Buffer B is 3.83), and Buffer C, Which buffer's pH would change less? Explain
DATA TABLE Buffer A Buffer B Mass of NaC2H3O2 used to prepare buffer (g) 0.149 g...
DATA TABLE Buffer A Buffer B Mass of NaC2H3O2 used to prepare buffer (g) 0.149 g 1.49 g Volume of buffer prepared (mL) 100.0 100.0 Molar concentration of HC2H3O2 in buffer (M) 0.1 1.0 Initial pH of buffer 4.24 4.33 Volume of 0.5 M NaOH to raise pH by 2 units (mL) 1.5 19.0 Volume of 0.5 M HCl to lower pH by 2 units (mL) 1.0 5.0 Volume of 0.5 M NaOH at equivalence point (mL) 1.75 19.75 3. ...
help with 2 buffer questions please. data table and questions in pics thank you Buffer B...
help with 2 buffer questions please.
data table and questions in pics thank you
Buffer B Buffer A .0 39 3 Mass of NaC2H3O2 used to prepare buffer (g) NO0-0 20 Volume of buffer prepared (mL) 1.0 0.1 Molar concentration of HC2H3O2 in buffer (M) 4.13 4.23 3.7 Initial pH of buffer Volume of 0.5 M NAOH to raise pH by 2 units (mL) 37.5 4.2mL Volume of 0.5 M HCI to lower pH by 2 units (mL) 3,1 m35...
Buffer B Buffer A o.3149 0.0317 Mass of NaC2H3O2 used to prepare buffer (g) 100.0 100.0...
Buffer B Buffer A o.3149 0.0317 Mass of NaC2H3O2 used to prepare buffer (g) 100.0 100.0 Volume of buffer prepared (mL) 1.0 0.1 Molar concentration of HC2H3O2 in buffer (M) 3.80 3.98 Initial pH of buffer Volume of 0.5 M NaOH to raise pH by 2 units (mL) 3. 9mL 34mL 1.5mL Volume of 0.5 M HCI to lower pH by 2 units (mL) 5.5mL Volume of 0.5 M NAOH at equivalence point (mL) ml 36.5mL 1. Buffer capacity has...
2 buffer questions please. data table and questions in pics Buffers In your “Results” section you...
2
buffer questions please.
data table and questions in pics
Buffers In your “Results” section you should report the initial pH of each buffer you made as well as the buffering capacity of each solution. . Write reaction equations that show how your acetic acid-acetate buffer reacts with an acid, H+, and with a base, OH”. Buffer A Buffer B 39 Mass of NaC2H5O2 used to prepare buffer (9) 039 MOD. 20 Volume of buffer prepared (mL) mbao 20 Molar...
Buffer A Buffer B Mass of NaC2H3O2 used to prepare buffer (g) .149 1.49 Volume of...
Buffer A Buffer B Mass of NaC2H3O2 used to prepare buffer (g) .149 1.49 Volume of buffer prepared (mL) 100.0 100.0 Molar concentration of HC2H3O2 in buffer (M) 0.1 1.0 Initial pH of buffer 4.0 4.0 Volume of 0.5 M NaOH to raise pH by 2 units (mL) 2 5 Volume of 0.5 M HCl to lower pH by 2 units (mL) 3 7 Volume of 0.5 M NaOH at equivalence point (mL) 4.5 10 Buffer capacity has a rather...
2. If you prepared a 0.15 M CH.COH - 0.15 M CHCO Na buffer, would you expect the resulting buffer capacity t...
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, lower, or the same as the buffer you prepared in Part II of this lab? Be specific and use your data. c. Measure the pH of the Beaker #2 solution, via a pH meter, and record in data sheet. Part II: Dilute Buffer Solution In this section, the pH of a 0.25 M CH3CO2H - 0.25...
Hi there, I totally understand what is happening and what they are asking but I cannot get passed...
Hi there,
I totally understand what is happening and what they are asking
but I cannot get passed the math.
Can someone please break this question down for me? also the
data in the last two rows is in ML. Please specify what you mean by
unclear?
Buffer capacity has a rather loose definition, yet it is an
important property of buffers. A commonly seen definition of buffer
capacity is: “the amount of H+ or OH– that can be neutralized...
Model 1: Solutions ("systems") that may or may not be buffers pH after System obtained by...
Model 1: Solutions ("systems") that may or may not be buffers pH after System obtained by mixing 100 mL Initial addition of ID of each of the two listed solutions pH 100 mL of 0.200 M NaOH pH after addition of 100 mL of 0.200 M HCI 0.100 M HC2H302 and 0.100 M NaC2H302 4.73 4.91 4.55 0.100 M HC2H302 and 0.100 M NACI 2.88 4.16 1.71 AwN 0.100 M HC2H302 and 0.050 M NaC2H302 4.43 4.67 4.12 0.100 M...
5. Say, for example, that you had prepared a Buffer X, in which you mixed 8.203 g of sodium acetate, NAC2H302, with 100.0 mL of 1.0 M acetic acid. What would be the initial pH of Buffer X? I
help with 2 buffer questions please.
data table and questions in pics thank you
Buffer B Buffer A .0 39 3 Mass of NaC2H3O2 used to prepare buffer (g) NO0-0 20 Volume of buffer prepared (mL) 1.0 0.1 Molar concentration of HC2H3O2 in buffer (M) 4.13 4.23 3.7 Initial pH of buffer Volume of 0.5 M NAOH to raise pH by 2 units (mL) 37.5 4.2mL Volume of 0.5 M HCI to lower pH by 2 units (mL) 3,1 m35...
Buffer B Buffer A o.3149 0.0317 Mass of NaC2H3O2 used to prepare buffer (g) 100.0 100.0 Volume of buffer prepared (mL) 1.0 0.1 Molar concentration of HC2H3O2 in buffer (M) 3.80 3.98 Initial pH of buffer Volume of 0.5 M NaOH to raise pH by 2 units (mL) 3. 9mL 34mL 1.5mL Volume of 0.5 M HCI to lower pH by 2 units (mL) 5.5mL Volume of 0.5 M NAOH at equivalence point (mL) ml 36.5mL 1. Buffer capacity has...
2
buffer questions please.
data table and questions in pics
Buffers In your “Results” section you should report the initial pH of each buffer you made as well as the buffering capacity of each solution. . Write reaction equations that show how your acetic acid-acetate buffer reacts with an acid, H+, and with a base, OH”. Buffer A Buffer B 39 Mass of NaC2H5O2 used to prepare buffer (9) 039 MOD. 20 Volume of buffer prepared (mL) mbao 20 Molar...
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, lower, or the same as the buffer you prepared in Part II of this lab? Be specific and use your data. c. Measure the pH of the Beaker #2 solution, via a pH meter, and record in data sheet. Part II: Dilute Buffer Solution In this section, the pH of a 0.25 M CH3CO2H - 0.25...
Hi there,
I totally understand what is happening and what they are asking
but I cannot get passed the math.
Can someone please break this question down for me? also the
data in the last two rows is in ML. Please specify what you mean by
unclear?
Buffer capacity has a rather loose definition, yet it is an
important property of buffers. A commonly seen definition of buffer
capacity is: “the amount of H+ or OH– that can be neutralized...
Model 1: Solutions ("systems") that may or may not be buffers pH after System obtained by mixing 100 mL Initial addition of ID of each of the two listed solutions pH 100 mL of 0.200 M NaOH pH after addition of 100 mL of 0.200 M HCI 0.100 M HC2H302 and 0.100 M NaC2H302 4.73 4.91 4.55 0.100 M HC2H302 and 0.100 M NACI 2.88 4.16 1.71 AwN 0.100 M HC2H302 and 0.050 M NaC2H302 4.43 4.67 4.12 0.100 M...
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