JEE Exam > JEE Questions > What should be the molarity of the solution ...
Start Learning for Free
What should be the molarity of the solution of sodium acetate to be added to a 0.1 M solution of CH3COOH to give a solution of pH = 5.5? (Nearest integer)
(pKa of CH3COOH = 4.5)
Correct answer is '1'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Most Upvoted Answer
What should be the molarity of the solution of sodium acetate to be a...
The solution formed will be an acidic buffer.
Free Test
FREE
| Start Free Test |
Community Answer
What should be the molarity of the solution of sodium acetate to be a...
Calculating the Molarity of Sodium Acetate Solution
To achieve a solution with a pH of 5.5 by mixing a 0.1 M solution of acetic acid (CH3COOH) with sodium acetate (CH3COONa), we need to consider the equilibrium between CH3COOH and CH3COO- ions.
Step 1: Writing the Equilibrium Equation
CH3COOH + H2O ⇌ CH3COO- + H3O+
Since the pH is 5.5, we can calculate the concentration of H3O+ ions using the formula pH = -log[H3O+].
Step 2: Calculating [H3O+]
pH = 5.5
[H3O+] = 10^(-5.5) = 3.16 x 10^(-6) M
Step 3: Using the Henderson-Hasselbalch equation
pH = pKa + log([A-]/[HA])
5.5 = 4.5 + log([CH3COO-]/[CH3COOH])
1 = log([CH3COO-]/[CH3COOH])
[CH3COO-]/[CH3COOH] = 10
Step 4: Mole Ratio
Since the mole ratio of CH3COOH to CH3COO- is 1:1, the concentration of CH3COO- must be equal to the concentration of CH3COOH.
Step 5: Total Concentration of Acetic Acid
Total concentration of acetic acid = 0.1 M (initial concentration of CH3COOH) + x M (concentration of CH3COONa)
Step 6: Solving for x
0.1 + x = 10
x = 9.9 M
Therefore, the molarity of the sodium acetate solution to be added to the 0.1 M solution of acetic acid is approximately 10 M, which is rounded to the nearest integer as 1 M.
To achieve a solution with a pH of 5.5 by mixing a 0.1 M solution of acetic acid (CH3COOH) with sodium acetate (CH3COONa), we need to consider the equilibrium between CH3COOH and CH3COO- ions.
Step 1: Writing the Equilibrium Equation
CH3COOH + H2O ⇌ CH3COO- + H3O+
Since the pH is 5.5, we can calculate the concentration of H3O+ ions using the formula pH = -log[H3O+].
Step 2: Calculating [H3O+]
pH = 5.5
[H3O+] = 10^(-5.5) = 3.16 x 10^(-6) M
Step 3: Using the Henderson-Hasselbalch equation
pH = pKa + log([A-]/[HA])
5.5 = 4.5 + log([CH3COO-]/[CH3COOH])
1 = log([CH3COO-]/[CH3COOH])
[CH3COO-]/[CH3COOH] = 10
Step 4: Mole Ratio
Since the mole ratio of CH3COOH to CH3COO- is 1:1, the concentration of CH3COO- must be equal to the concentration of CH3COOH.
Step 5: Total Concentration of Acetic Acid
Total concentration of acetic acid = 0.1 M (initial concentration of CH3COOH) + x M (concentration of CH3COONa)
Step 6: Solving for x
0.1 + x = 10
x = 9.9 M
Therefore, the molarity of the sodium acetate solution to be added to the 0.1 M solution of acetic acid is approximately 10 M, which is rounded to the nearest integer as 1 M.
Attention JEE Students!
To make sure you are not studying endlessly, EduRev has designed JEE study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in JEE.
|
Explore Courses for JEE exam
|
|
Similar JEE Doubts
Top Courses for JEEView all
What should be the molarity of the solution of sodium acetate to be added to a 0.1 M solution of CH3COOH to give a solution of pH = 5.5? (Nearest integer)(pKa of CH3COOH = 4.5)Correct answer is '1'. Can you explain this answer?
Question Description
What should be the molarity of the solution of sodium acetate to be added to a 0.1 M solution of CH3COOH to give a solution of pH = 5.5? (Nearest integer)(pKa of CH3COOH = 4.5)Correct answer is '1'. Can you explain this answer? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about What should be the molarity of the solution of sodium acetate to be added to a 0.1 M solution of CH3COOH to give a solution of pH = 5.5? (Nearest integer)(pKa of CH3COOH = 4.5)Correct answer is '1'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for What should be the molarity of the solution of sodium acetate to be added to a 0.1 M solution of CH3COOH to give a solution of pH = 5.5? (Nearest integer)(pKa of CH3COOH = 4.5)Correct answer is '1'. Can you explain this answer?.
What should be the molarity of the solution of sodium acetate to be added to a 0.1 M solution of CH3COOH to give a solution of pH = 5.5? (Nearest integer)(pKa of CH3COOH = 4.5)Correct answer is '1'. Can you explain this answer? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about What should be the molarity of the solution of sodium acetate to be added to a 0.1 M solution of CH3COOH to give a solution of pH = 5.5? (Nearest integer)(pKa of CH3COOH = 4.5)Correct answer is '1'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for What should be the molarity of the solution of sodium acetate to be added to a 0.1 M solution of CH3COOH to give a solution of pH = 5.5? (Nearest integer)(pKa of CH3COOH = 4.5)Correct answer is '1'. Can you explain this answer?.
Solutions for What should be the molarity of the solution of sodium acetate to be added to a 0.1 M solution of CH3COOH to give a solution of pH = 5.5? (Nearest integer)(pKa of CH3COOH = 4.5)Correct answer is '1'. Can you explain this answer? in English & in Hindi are available as part of our courses for JEE.
Download more important topics, notes, lectures and mock test series for JEE Exam by signing up for free.
Here you can find the meaning of What should be the molarity of the solution of sodium acetate to be added to a 0.1 M solution of CH3COOH to give a solution of pH = 5.5? (Nearest integer)(pKa of CH3COOH = 4.5)Correct answer is '1'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
What should be the molarity of the solution of sodium acetate to be added to a 0.1 M solution of CH3COOH to give a solution of pH = 5.5? (Nearest integer)(pKa of CH3COOH = 4.5)Correct answer is '1'. Can you explain this answer?, a detailed solution for What should be the molarity of the solution of sodium acetate to be added to a 0.1 M solution of CH3COOH to give a solution of pH = 5.5? (Nearest integer)(pKa of CH3COOH = 4.5)Correct answer is '1'. Can you explain this answer? has been provided alongside types of What should be the molarity of the solution of sodium acetate to be added to a 0.1 M solution of CH3COOH to give a solution of pH = 5.5? (Nearest integer)(pKa of CH3COOH = 4.5)Correct answer is '1'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice What should be the molarity of the solution of sodium acetate to be added to a 0.1 M solution of CH3COOH to give a solution of pH = 5.5? (Nearest integer)(pKa of CH3COOH = 4.5)Correct answer is '1'. Can you explain this answer? tests, examples and also practice JEE tests.
|
|
Explore Courses for JEE exam
|
|
Suggested Free Tests
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup