In an experiment to study the properties of acetic acid a student takes about 2 mL of acetic acid in a dry test tube. He adds about 2 mL of water to it and shakes the test tube well. He is likely to observe that:
In an experiment to study the properties of acetic acid a student takes about 2 mL of acetic acid in a dry test tube. He adds about 2 mL of water to it and shakes the test tube well. He is likely to observe that:
Options
Official answer
Option A is correct.
Marking scheme
- 1.1 Mark for selecting the correct option A.
Hint
Think about whether vinegar (which is a dilute solution of acetic acid in water) is a single clear phase or has separate layers.
Quick oral answer
Acetic acid dissolves completely and readily in water to form a clear, homogenous solution due to its ability to form hydrogen bonds with water molecules.
Common mistakes
- 1.Assuming that all organic compounds are insoluble in water and form separate layers like oil and water.
Analysis and explanation
Acetic acid () is a polar organic compound that readily forms hydrogen bonds with water molecules. Because of this strong intermolecular hydrogen bonding, acetic acid is completely miscible (soluble) in water in all proportions.
- Option A is correct: Shaking acetic acid with water results in a clear, homogenous, and colourless solution because it dissolves readily.
- Option B is incorrect: No chemical reaction occurs that produces a coloured substance; the solution remains colourless.
- Options C and D are incorrect: Since acetic acid and water are completely miscible, they do not form separate layers, so neither liquid floats on top of the other.
Interesting facts
Vinegar is simply a solution of acetic acid in water, which highlights how completely miscible acetic acid is with water.
Question details
Q26 of 40 questions
- Board
- CBSE
- Class
- Class 10
- Subject
- Science
- Year
- 2013
- Section
- Section B
- Marks
- 1
- Type
- MCQ
- Chapter
- Chemical Reactions and Equations
- Topic
- Properties of Acetic Acid
- Bloom's level
- Remembering
- Syllabus topic
- Chemical reactions and equations (Practical skills)
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Frequently asked questions
How many marks does this question carry in CBSE Class 10 Science 2013?
This question carries 1 mark in the CBSE Class 10 Science 2013 examination.
Which chapter does this question come from in Science?
This question is from the chapter "Chemical Reactions and Equations" in the CBSE Class 10 Science syllabus.
What topic does this question cover in Science?
This question covers the topic "Properties of Acetic Acid" from CBSE Class 10 Science.
What type of question is this in the CBSE Class 10 Science 2013 paper?
This is a MCQ question from Section B in the CBSE Class 10 Science 2013 paper.