Cengage Chaptor 14: EOC Question 18 1 pt You makc 1.00 L of a buffered solhution

Question

Cengage Chaptor 14: EOC Question 18 1 pt You makc 1.00 L of a buffered solhution (pH-4.3) by mixing acctic acid and sodium acctate. You have 1.00 M solutions of cach component of the buffcred solution. What volume of each solution do vou mix to make such a buffered solution? Ka 1.8x10 Volume of HC2H302- Volume of NaC2H30 Question 19 1 pt 1 pt 1pt 1pt 1 pt 1 pt Question 20 mL Question 21 ML Question 22 Question 23 Submit Answer Try Another Verslon 10 item attempts remaining Question 24 Question 25 1 pt Question 271pt 1 pt 1 pt 1 pt 1 pt 1 pt Question 33 1pt Question 26 Question 28 Question 29 Question 30 Question 31 Question 32 Progress 22/61 items Due Nov 1 at 11:55 PM PreviousNext 3:18 PM E 11/1/2017 8 Type here to search

Explanation / Answer

total volume of buffer = 1.00 L

volume of acetic acid = x

volume of sodium acetate = 1 - x

pH = 4.3

pKa = -log Ka = 4.74

pH = pKa + log [salt / acid]

4.3 = 4.74 + log [ 1 - x / x]

[ 1 - x / x] = 0.363

1 - x = 0.363 x

x = 0.7336

volume of CH3COOH = 734 mL

volume of CH3COONa = 266 mL

Related Questions

Navigate

• Browse (All)
• Browse C
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.