Homework Answers
1)
Answer : decrease slightly
moles of CH3COOH = 0.475
moles of CH3COOK = 0.475
moles of H+ = 0.01
pH = pKa + log [salt - C / acid + C]
= 4.74 + log [0.475 - 0.01 / 0.475 + 0.01]
pH = 4.72
2)
Answer : of the salt
moles of NaOH =
Add Answer to:
part 1 dropdown box:
-increase slightly
-increase by 2 units
-decrease slightly
-decrease by 2 units...
the options for the first question is: increase slightly, increase by 2 units, decrease slightly, decrease...
the options for the first question is: increase slightly,
increase by 2 units, decrease slightly, decrease by two units, and
not change.
the options for the second question is: of the weak acid, of
the salt.
Use the References to access important values if needed for this question. A buffer solution that is 0.301 M in CH, COOH and 0.301 M in CH,COONa has a pH of 4.74. The addition of 0.01 mol of H, 0 to 1.0 L of...
the answer is not "not change" and "of the salt" i tried that answer an it...
the answer is not "not change" and "of the salt" i tried that
answer an it was incorrect.
A buffer solution that is 0.301 M in CH, COOH and 0.301 M in CH3COONa has a pH of 4.74. The addition of 0.01 mol of H, 0 to 1.0 L of this buffer would cause the pH to not change The capacity of this buffer for added H30+ could be increased by the addition of 0.112 mol of the salt A...
A buffer solution that is 0.482 M in CH3COOH and 0.482 M in CH3COONa has a...
A buffer solution that is 0.482 M in CH3COOH and 0.482 M in CH3COONa has a pH of 4.74. The addition of 0.01 mol of H, 07 to 1.0 L of this buffer would cause the pH to The capacity of this buffer for added OH could be increased by the addition of 0.185 mol [Review Topics [References] Use the References to access important values if needed for this question. A buffer solution that is 0.482 M in CH3COOH and...
A buffer solution that is 0.333 M in CH3COOH and 0.333 M in CH3 COONa has...
A buffer solution that is 0.333 M in CH3COOH and 0.333 M in CH3 COONa has a pH of 4.74 The addition of 0.01 mol of OH to 1.0 L of this buffer would cause the pH t increase slightly increase by 2 units The capacity of this buffer for added OH could be increased by the addition decrease slightly decrease by 2 units not change 9 more group attempts remaining Submit Answer Retry Entire Group A buffer solution that...
A buffer solution that is 0.340 M in HNO2 and 0.340 M in KNO2 has a...
A buffer solution that is 0.340 M in HNO2 and 0.340 M in KNO2
has a pH of 3.35. The addition of 0.01 mol of to 1.0 L of H3O+ this
buffer would cause the pH to _________ . The capacity of this
buffer for added H3O+ could be increased by the addition of 0.127
mol CHOICES: INCREASE SLIGHTLY,
INCREASE BY 2 UNITS, DECREASE SLIGHTLY, DECREASE BY 2 UNITS, NO
CHANGE.
SECOND CHOICES: OF THE WEAK ACID, OF THE SALT...
please answer ALL parts of this one question. (a,b and part c). do not answer if...
please answer ALL parts of this one question. (a,b and part c). do
not answer if you will not answer them all please.
Use the References to access important values if needed for this question. A 1.00 liter solution contains 0.48 M acetic acid and 0.36 M sodium acetate. If 35.0 mL of water are added to this system, indicate whether the following statements are true or false. (Note the the volume MUST CHANGE upon the addition of water.) A....
This is all info given A buffer solution that is 0.448 M in HNO2 and 0.448...
This is all info given
A buffer solution that is 0.448 M in HNO2 and 0.448 M in KNO, has a pH of 3.35. The addition of 0.01 mol of OH to 1.0 L of this buffer would cause the pH t increase slightly The capacity of this buffer for added OH could be increased by the addition increase by 2 units decrease slightly decrease by 2 units not change A buffer solution that is 0.448 M in HNO2 and...
A 1 liter solution contains 0.373 M acetic acid and 0.497 M potassium acetate. Addition of...
A 1 liter solution contains 0.373 M acetic acid and 0.497 M potassium acetate. Addition of 0.093 moles of calcium hydroxide will: (Assume that the volume does not change upon the addition of calcium hydroxide.) Raise the pH slightly Lower the pH slightly Raise the pH by several units Lower the pH by several units Not change the pH Exceed thu ouffer capacity The pK, value for CH, COOH is 4.74. Would a buffer prepared from CH3COOH and CH,COONa with...
need all FOUR please!! please! provided Ka values if needed A buffer solution is made that...
need all FOUR please!! please! provided Ka values if
needed
A buffer solution is made that is 0.451 M in H, S and 0.451 M in NaHS. If K for H, Sis 1.00 x 10-7, what is the pH of the buffer solution? pH= Write the net ionic equation for the reaction that occurs when 0.105 mol NaOH is added to 1.00 L of the buffer solution (Use the lowest possible coefficients. Omit states of matter.) Submit Answer Retry Entire...
Please help with Buffer 3 ! Part 1 (15 pts) A. Buffer 1 Mix 10.0 ml...
Please help with Buffer 3 !
Part 1 (15 pts) A. Buffer 1 Mix 10.0 ml of 10 M CHCOOH and 25.0 ml of 10 M sodium acetate (NaCH.COO). Calculate the expected pH. PH-pk + log CH, COOH NACH.COD Cacid] V=10mL V = 25mL I PM - 4.74 + log [25x!! 30x17 M.1.0M (M-1.0M ? pH 4.+ 10 3 (2) IPH: 5.1 B. Buffer 2 Mix 30.0 ml of 1.0 M CH.COOH and 5.0 mL of 1.0 M sodium acetate...
the options for the first question is: increase slightly,
increase by 2 units, decrease slightly, decrease by two units, and
not change.
the options for the second question is: of the weak acid, of
the salt.
Use the References to access important values if needed for this question. A buffer solution that is 0.301 M in CH, COOH and 0.301 M in CH,COONa has a pH of 4.74. The addition of 0.01 mol of H, 0 to 1.0 L of...
the answer is not "not change" and "of the salt" i tried that
answer an it was incorrect.
A buffer solution that is 0.301 M in CH, COOH and 0.301 M in CH3COONa has a pH of 4.74. The addition of 0.01 mol of H, 0 to 1.0 L of this buffer would cause the pH to not change The capacity of this buffer for added H30+ could be increased by the addition of 0.112 mol of the salt A...
A buffer solution that is 0.482 M in CH3COOH and 0.482 M in CH3COONa has a pH of 4.74. The addition of 0.01 mol of H, 07 to 1.0 L of this buffer would cause the pH to The capacity of this buffer for added OH could be increased by the addition of 0.185 mol [Review Topics [References] Use the References to access important values if needed for this question. A buffer solution that is 0.482 M in CH3COOH and...
A buffer solution that is 0.333 M in CH3COOH and 0.333 M in CH3 COONa has a pH of 4.74 The addition of 0.01 mol of OH to 1.0 L of this buffer would cause the pH t increase slightly increase by 2 units The capacity of this buffer for added OH could be increased by the addition decrease slightly decrease by 2 units not change 9 more group attempts remaining Submit Answer Retry Entire Group A buffer solution that...
A buffer solution that is 0.340 M in HNO2 and 0.340 M in KNO2
has a pH of 3.35. The addition of 0.01 mol of to 1.0 L of H3O+ this
buffer would cause the pH to _________ . The capacity of this
buffer for added H3O+ could be increased by the addition of 0.127
mol CHOICES: INCREASE SLIGHTLY,
INCREASE BY 2 UNITS, DECREASE SLIGHTLY, DECREASE BY 2 UNITS, NO
CHANGE.
SECOND CHOICES: OF THE WEAK ACID, OF THE SALT...
please answer ALL parts of this one question. (a,b and part c). do
not answer if you will not answer them all please.
Use the References to access important values if needed for this question. A 1.00 liter solution contains 0.48 M acetic acid and 0.36 M sodium acetate. If 35.0 mL of water are added to this system, indicate whether the following statements are true or false. (Note the the volume MUST CHANGE upon the addition of water.) A....
This is all info given
A buffer solution that is 0.448 M in HNO2 and 0.448 M in KNO, has a pH of 3.35. The addition of 0.01 mol of OH to 1.0 L of this buffer would cause the pH t increase slightly The capacity of this buffer for added OH could be increased by the addition increase by 2 units decrease slightly decrease by 2 units not change A buffer solution that is 0.448 M in HNO2 and...
A 1 liter solution contains 0.373 M acetic acid and 0.497 M potassium acetate. Addition of 0.093 moles of calcium hydroxide will: (Assume that the volume does not change upon the addition of calcium hydroxide.) Raise the pH slightly Lower the pH slightly Raise the pH by several units Lower the pH by several units Not change the pH Exceed thu ouffer capacity The pK, value for CH, COOH is 4.74. Would a buffer prepared from CH3COOH and CH,COONa with...
need all FOUR please!! please! provided Ka values if
needed
A buffer solution is made that is 0.451 M in H, S and 0.451 M in NaHS. If K for H, Sis 1.00 x 10-7, what is the pH of the buffer solution? pH= Write the net ionic equation for the reaction that occurs when 0.105 mol NaOH is added to 1.00 L of the buffer solution (Use the lowest possible coefficients. Omit states of matter.) Submit Answer Retry Entire...
Please help with Buffer 3 !
Part 1 (15 pts) A. Buffer 1 Mix 10.0 ml of 10 M CHCOOH and 25.0 ml of 10 M sodium acetate (NaCH.COO). Calculate the expected pH. PH-pk + log CH, COOH NACH.COD Cacid] V=10mL V = 25mL I PM - 4.74 + log [25x!! 30x17 M.1.0M (M-1.0M ? pH 4.+ 10 3 (2) IPH: 5.1 B. Buffer 2 Mix 30.0 ml of 1.0 M CH.COOH and 5.0 mL of 1.0 M sodium acetate...
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