Out of 1000 molecules of acetic acid are_ dissociated into ions.
Correct answer: A. 13
- A. 13
- B. 15
- C. 17
- D. 11
Explanation
Acetic acid (CH3COOH) is a weak acid, meaning it does not fully ionize in solution. Typically, only about 1-2% of acetic acid molecules dissociate into ions in water. Therefore, out of 1000 molecules, approximately 13 (1.3%) dissociate, making option A correct. Option B (15) and Option C (17) indicate a higher dissociation rate than expected for a weak acid. Option D (11) suggests a lower dissociation rate than the typical range. Hence, option A is the most accurate reflection of acetic acid's dissociation behavior.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? support@testustad.com
About Acids, Bases and Salts
Acid and base behaviour is explained through the Bronsted-Lowry transfer of protons and the Lewis donation or acceptance of electron pairs. The topic includes pH, pOH, ionisation and water equilibrium, plus salt formation and hydrolysis, where a salt solution may become acidic, basic or neutral.
Practise Acids, Bases and Salts
314 free Acids, Bases and Salts MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Chemistry questions like this
Chemistry is on 14 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Acids, Bases and Salts questions
The characteristics properties of a base in aqueous solution is due to the presence of
Which of the following is strongest acid amongst these?
The false statement for a base is
The species which can act both as Bronsted-Lowery acid & base is
Which of the following is not Bronsted-Lowery base?
Which of the following is not Bronsted-Lowery acid?