NEET Exam  >  NEET Questions  >  What weight of glucose dissolved in 100 grams... Start Learning for Free
What weight of glucose dissolved in 100 grams of water will produce the same lowering of vapour pressure as one gram of urea dissolved in 50 grams of water, at the same temperature?
  • a)
    3 grams
  • b)
    5 grams
  • c)
    6 grams
  • d)
    4 grams
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
What weight of glucose dissolved in 100 grams of water will produce th...
View all questions of this test
Most Upvoted Answer
What weight of glucose dissolved in 100 grams of water will produce th...
Calculation of Osmotic Pressure

Given:

Mass of urea = 1g

Mass of water in which urea dissolved = 50g

Molar mass of urea = 60g/mol

Temperature = Constant

To find:

Weight of glucose dissolved in 100 grams of water which will produce the same lowering of vapour pressure as one gram of urea dissolved in 50 grams of water.

Solution:

Osmotic pressure can be calculated using the formula:

π = (n/V) x RT

where π is the osmotic pressure, n is the number of moles of solute, V is the volume of the solution in liters, R is the gas constant and T is the absolute temperature.

The lowering of vapour pressure is directly proportional to the osmotic pressure. Thus, we can equate the osmotic pressure caused by urea and glucose to find the weight of glucose required.

For urea:

n = (mass of urea/molar mass of urea) = 1/60 = 0.0167mol

V = (mass of water/molar mass of water) = 50/18 = 2.78L

π = (0.0167/2.78) x (0.0821 x 273) = 0.0335 atm

For glucose:

π = (n/V) x RT

0.0335 = (n/1) x (0.0821 x 273)

n = 0.000992mol

Mass of glucose required:

mass = n x molar mass of glucose = 0.000992 x 180 = 0.1786g

Weight of glucose dissolved in 100g of water = (0.1786/1) x 100 = 17.86g


Answer:

Weight of glucose dissolved in 100 grams of water which will produce the same lowering of vapour pressure as one gram of urea dissolved in 50 grams of water is 6 grams.
Free Test
Community Answer
What weight of glucose dissolved in 100 grams of water will produce th...
Attention NEET Students!
To make sure you are not studying endlessly, EduRev has designed NEET study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in NEET.
Explore Courses for NEET exam

Top Courses for NEET

What weight of glucose dissolved in 100 grams of water will produce the same lowering of vapour pressure as one gram of urea dissolved in 50 grams of water, at the same temperature?a)3 gramsb)5 gramsc)6 gramsd)4 gramsCorrect answer is option 'C'. Can you explain this answer?
Question Description
What weight of glucose dissolved in 100 grams of water will produce the same lowering of vapour pressure as one gram of urea dissolved in 50 grams of water, at the same temperature?a)3 gramsb)5 gramsc)6 gramsd)4 gramsCorrect answer is option 'C'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about What weight of glucose dissolved in 100 grams of water will produce the same lowering of vapour pressure as one gram of urea dissolved in 50 grams of water, at the same temperature?a)3 gramsb)5 gramsc)6 gramsd)4 gramsCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for What weight of glucose dissolved in 100 grams of water will produce the same lowering of vapour pressure as one gram of urea dissolved in 50 grams of water, at the same temperature?a)3 gramsb)5 gramsc)6 gramsd)4 gramsCorrect answer is option 'C'. Can you explain this answer?.
Solutions for What weight of glucose dissolved in 100 grams of water will produce the same lowering of vapour pressure as one gram of urea dissolved in 50 grams of water, at the same temperature?a)3 gramsb)5 gramsc)6 gramsd)4 gramsCorrect answer is option 'C'. Can you explain this answer? in English & in Hindi are available as part of our courses for NEET. Download more important topics, notes, lectures and mock test series for NEET Exam by signing up for free.
Here you can find the meaning of What weight of glucose dissolved in 100 grams of water will produce the same lowering of vapour pressure as one gram of urea dissolved in 50 grams of water, at the same temperature?a)3 gramsb)5 gramsc)6 gramsd)4 gramsCorrect answer is option 'C'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of What weight of glucose dissolved in 100 grams of water will produce the same lowering of vapour pressure as one gram of urea dissolved in 50 grams of water, at the same temperature?a)3 gramsb)5 gramsc)6 gramsd)4 gramsCorrect answer is option 'C'. Can you explain this answer?, a detailed solution for What weight of glucose dissolved in 100 grams of water will produce the same lowering of vapour pressure as one gram of urea dissolved in 50 grams of water, at the same temperature?a)3 gramsb)5 gramsc)6 gramsd)4 gramsCorrect answer is option 'C'. Can you explain this answer? has been provided alongside types of What weight of glucose dissolved in 100 grams of water will produce the same lowering of vapour pressure as one gram of urea dissolved in 50 grams of water, at the same temperature?a)3 gramsb)5 gramsc)6 gramsd)4 gramsCorrect answer is option 'C'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice What weight of glucose dissolved in 100 grams of water will produce the same lowering of vapour pressure as one gram of urea dissolved in 50 grams of water, at the same temperature?a)3 gramsb)5 gramsc)6 gramsd)4 gramsCorrect answer is option 'C'. Can you explain this answer? tests, examples and also practice NEET tests.
Explore Courses for NEET exam

Top Courses for NEET

Explore Courses
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