Class 12 Exam > Class 12 Questions > what is the molality of the solution prepared...
Start Learning for Free
what is the molality of the solution prepared by dissolving 125ml of pure methanol (d=0.8mL) in 375g of ethanol.
?
Most Upvoted Answer
what is the molality of the solution prepared by dissolving 125ml of p...
Calculating Molality of Solution
To calculate the molality of the solution, we need to first find the number of moles of methanol present in the solution. We can use the formula:
n = m/M
where n is the number of moles, m is the mass of the substance, and M is the molar mass of the substance.
Find the number of moles of methanol
- Mass of methanol = Volume x Density = 125 mL x 0.8 g/mL = 100 g
- Molar mass of methanol = 32 g/mol
- Number of moles of methanol = 100 g / 32 g/mol = 3.125 mol
Find the total mass of the solution
- Mass of ethanol = 375 g
- Total mass of solution = Mass of methanol + Mass of ethanol = 100 g + 375 g = 475 g
Calculate Molality
- Molality = moles of solute / mass of solvent in Kg
- Mass of solvent = Mass of ethanol / 1000 = 375 g / 1000 = 0.375 kg
- Molality = 3.125 mol / 0.375 kg = 8.33 mol/kg
Therefore, the molality of the solution prepared by dissolving 125 mL of pure methanol in 375 g of ethanol is 8.33 mol/kg.
To calculate the molality of the solution, we need to first find the number of moles of methanol present in the solution. We can use the formula:
n = m/M
where n is the number of moles, m is the mass of the substance, and M is the molar mass of the substance.
Find the number of moles of methanol
- Mass of methanol = Volume x Density = 125 mL x 0.8 g/mL = 100 g
- Molar mass of methanol = 32 g/mol
- Number of moles of methanol = 100 g / 32 g/mol = 3.125 mol
Find the total mass of the solution
- Mass of ethanol = 375 g
- Total mass of solution = Mass of methanol + Mass of ethanol = 100 g + 375 g = 475 g
Calculate Molality
- Molality = moles of solute / mass of solvent in Kg
- Mass of solvent = Mass of ethanol / 1000 = 375 g / 1000 = 0.375 kg
- Molality = 3.125 mol / 0.375 kg = 8.33 mol/kg
Therefore, the molality of the solution prepared by dissolving 125 mL of pure methanol in 375 g of ethanol is 8.33 mol/kg.
Community Answer
what is the molality of the solution prepared by dissolving 125ml of p...
|
Explore Courses for Class 12 exam
|
|
Similar Class 12 Doubts
what is the molality of the solution prepared by dissolving 125ml of pure methanol (d=0.8mL) in 375g of ethanol. Related: NCERT Solutions - Solutions (Part - 1)?
Question Description
what is the molality of the solution prepared by dissolving 125ml of pure methanol (d=0.8mL) in 375g of ethanol. Related: NCERT Solutions - Solutions (Part - 1)? for Class 12 2024 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about what is the molality of the solution prepared by dissolving 125ml of pure methanol (d=0.8mL) in 375g of ethanol. Related: NCERT Solutions - Solutions (Part - 1)? covers all topics & solutions for Class 12 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for what is the molality of the solution prepared by dissolving 125ml of pure methanol (d=0.8mL) in 375g of ethanol. Related: NCERT Solutions - Solutions (Part - 1)?.
what is the molality of the solution prepared by dissolving 125ml of pure methanol (d=0.8mL) in 375g of ethanol. Related: NCERT Solutions - Solutions (Part - 1)? for Class 12 2024 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about what is the molality of the solution prepared by dissolving 125ml of pure methanol (d=0.8mL) in 375g of ethanol. Related: NCERT Solutions - Solutions (Part - 1)? covers all topics & solutions for Class 12 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for what is the molality of the solution prepared by dissolving 125ml of pure methanol (d=0.8mL) in 375g of ethanol. Related: NCERT Solutions - Solutions (Part - 1)?.
Solutions for what is the molality of the solution prepared by dissolving 125ml of pure methanol (d=0.8mL) in 375g of ethanol. Related: NCERT Solutions - Solutions (Part - 1)? in English & in Hindi are available as part of our courses for Class 12.
Download more important topics, notes, lectures and mock test series for Class 12 Exam by signing up for free.
Here you can find the meaning of what is the molality of the solution prepared by dissolving 125ml of pure methanol (d=0.8mL) in 375g of ethanol. Related: NCERT Solutions - Solutions (Part - 1)? defined & explained in the simplest way possible. Besides giving the explanation of
what is the molality of the solution prepared by dissolving 125ml of pure methanol (d=0.8mL) in 375g of ethanol. Related: NCERT Solutions - Solutions (Part - 1)?, a detailed solution for what is the molality of the solution prepared by dissolving 125ml of pure methanol (d=0.8mL) in 375g of ethanol. Related: NCERT Solutions - Solutions (Part - 1)? has been provided alongside types of what is the molality of the solution prepared by dissolving 125ml of pure methanol (d=0.8mL) in 375g of ethanol. Related: NCERT Solutions - Solutions (Part - 1)? theory, EduRev gives you an
ample number of questions to practice what is the molality of the solution prepared by dissolving 125ml of pure methanol (d=0.8mL) in 375g of ethanol. Related: NCERT Solutions - Solutions (Part - 1)? tests, examples and also practice Class 12 tests.
|
|
Explore Courses for Class 12 exam
|
|
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