All Courses
Explore Courses UPSC Exam UPSC Test Series Free Notes EduRev Infinity Get the App Login Join for Free
Sign in Open App
JEE Exam  >  JEE Questions  >  Solution that is 20% ethanol by volume is fou... Start Learning for Free
SaveJoin the Discussion on the App
Solution that is 20% ethanol by volume is found to have a density of 0.997 g/mL. Density of ethanol is 0.789 g/mL. Thus, mass percent of ethanol solution is?
Clear all your JEE doubts with EduRev
Most Upvoted Answer
Solution that is 20% ethanol by volume is found to have a density of 0...
Solution:

Given:

Volume fraction of ethanol in solution = 20%

Density of solution = 0.997 g/mL

Density of ethanol = 0.789 g/mL


Calculations:

Let us consider 100 mL of the solution. Then, the volume of ethanol in the solution would be 20 mL (20% of 100 mL).

The mass of the solution can be calculated using the density formula:

Density = Mass/Volume

Mass = Density x Volume

Mass of 100 mL of solution = 0.997 g/mL x 100 mL = 99.7 g

The mass of ethanol can also be calculated using its density and volume:

Mass of ethanol = Density of ethanol x Volume of ethanol

Mass of ethanol = 0.789 g/mL x 20 mL = 15.78 g

The mass percent of ethanol solution is the mass of ethanol divided by the mass of solution, multiplied by 100:

Mass percent of ethanol solution = (Mass of ethanol/Mass of solution) x 100

Mass percent of ethanol solution = (15.78 g/99.7 g) x 100 = 15.8%

Answer:

The mass percent of the ethanol solution is 15.8%.
Explore Courses for JEE exam

Similar JEE Doubts

PassageProperties such as boiling point, freezing point and vapour pressure of a pure solvent change when solute molecules are added to get homogeneous solution. These are called colligative properties.Applications of colligative properties are very useful in day-to-day life. One of its examples is the use of ethylene glycol and water mixture as anti-freezing liquid in the radiator of automobiles.A solution M is prepared by mixing ethanol and water. The mole fraction of ethanol in the mixture is 0.9.Given, freezing point depression constant of water() = l . 8 6 K kg mol-1Freezing point depression constant of ethanol () = 2.0 K kg mol-1Boiling point elevation constant of water {) = 0.52 K kg mol-1Boiling point elevation constant of ethanol ()=1.2 K kg mol-1Standard freezing point of water =273 K Standard freezing point of ethanol = 155.7 K Standard boiling point of water = 373 K Standard boiling point of ethanol = 351.5 K Vapour pressure of pure water = 32.8 mm Hg Vapour pressure of pure ethanol = 40 mm Hg Molecular weight of water = 18 g mol-1Molecular weight of ethanol = 46 g mol-1In answering the following questions, consider the solutions to be ideal dilute solutions and solutes to be non-volatile and non-dissociative.Q.Water is added to the solution M such that the mole fraction of water in the solution becomes 0.9. The boiling point of this solution is

Directions: Read the paragraph and answer the following question.Properties such as boiling point, freezing point and vapour pressure of a pure solvent change when solute molecules are added to get homogenous solution. These are called colligative properties. Applications of colligative properties are very useful in day to day life. One of its examples is the use of ethylene glycol and water mixture as anti-freezing liquid in the radiator of automobiles.A solution M is prepared by mixing ethanol and water. The mole fraction of ethanol in the mixture is 0.9.Given: Freezing point depression constant of water (Kwater) = 1.86 K kg mol-1Freezing point depression constant on ethanol (Kethanol) = 2.0 K kg mol-1Boiling point elevation constant of water = 0.52 K kg mol-1Boiling point elevation constant of ethanol = 1.2 K kg mol-1Standard freezing point of water = 273 KStandard freezing point of ethanol = 155.7KStandard boiling point of water = 373 KStandard boiling point of ethanol = 351.5 KVapour pressure of pure water = 32.8 mm HgVapour pressure of pure ethanol = 40 mm HgMolecular weight of water = 18 g mol-1Molecular weight of ethanol = 46 g mol-1In answering the following question, consider the situations to be ideal dilute solutions and solutes to be non-volatile and non-dissociate. Correct answer is '376.2'. Can you explain this answer?

Top Courses for JEEView all

Top Courses for JEE

Solution that is 20% ethanol by volume is found to have a density of 0.997 g/mL. Density of ethanol is 0.789 g/mL. Thus, mass percent of ethanol solution is?
Question Description
Solution that is 20% ethanol by volume is found to have a density of 0.997 g/mL. Density of ethanol is 0.789 g/mL. Thus, mass percent of ethanol solution is? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about Solution that is 20% ethanol by volume is found to have a density of 0.997 g/mL. Density of ethanol is 0.789 g/mL. Thus, mass percent of ethanol solution is? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Solution that is 20% ethanol by volume is found to have a density of 0.997 g/mL. Density of ethanol is 0.789 g/mL. Thus, mass percent of ethanol solution is?.
Solutions for Solution that is 20% ethanol by volume is found to have a density of 0.997 g/mL. Density of ethanol is 0.789 g/mL. Thus, mass percent of ethanol solution is? 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 Solution that is 20% ethanol by volume is found to have a density of 0.997 g/mL. Density of ethanol is 0.789 g/mL. Thus, mass percent of ethanol solution is? defined & explained in the simplest way possible. Besides giving the explanation of Solution that is 20% ethanol by volume is found to have a density of 0.997 g/mL. Density of ethanol is 0.789 g/mL. Thus, mass percent of ethanol solution is?, a detailed solution for Solution that is 20% ethanol by volume is found to have a density of 0.997 g/mL. Density of ethanol is 0.789 g/mL. Thus, mass percent of ethanol solution is? has been provided alongside types of Solution that is 20% ethanol by volume is found to have a density of 0.997 g/mL. Density of ethanol is 0.789 g/mL. Thus, mass percent of ethanol solution is? theory, EduRev gives you an ample number of questions to practice Solution that is 20% ethanol by volume is found to have a density of 0.997 g/mL. Density of ethanol is 0.789 g/mL. Thus, mass percent of ethanol solution is? tests, examples and also practice JEE tests.
Explore Courses for JEE exam

Top Courses for JEE

Explore Courses

Suggested Free Tests

Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev
Get App
© EduRev
Education Revolution
Follow Us
Signup to see your scores go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup