UGC NET Exam  >  UGC NET Questions  >  “X”, a nonvolatile organic compou... Start Learning for Free
“X”, a nonvolatile organic compound was used to make up a solution. Solution I contains 2.50 g of X dissolved in 200 g of water and has a vapor pressure of 754.5 mmHg at the normal boiling point of water. The molar mass of Z is.
  • a)
    40 g/mol
  • b)
    31.023 mol
  • c)
    31.023 gm
  • d)
    31.023 g/mol
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
“X”, a nonvolatile organic compound was used to make up a ...
Concept: Raoult's Law to determine mole fraction of the solvent:
Psolution = (Xsolvent) (P °solvent)
Raoult's Law to determine mole fraction of the solvent:
Psolution = (Xsolvent) (P °solvent)
754.5 torr = (Xsolvent) (760.0 torr)
Note: 760.0 torr is the vapor pressure of water at its normal boiling point, 100 °C
Xsolvent = 754.5 torr / 760.0 torr
Xsolvent = 0.99276316
Use the mole fraction and the moles of water to determine the moles of X:
200 g / 18.015 g/mol = 11.101 mol
0.99276316 = 11.101 / (11.101 + x) <--- x equals the moles of X dissolved
11.021 + 0.99276 x = 11.101
x = 0.0806
Calculate molar mass of X:
2.5 g /0.0806 mol = 31.023 g/mol
View all questions of this test
Explore Courses for UGC NET exam
“X”, a nonvolatile organic compound was used to make up a solution. Solution I contains 2.50 g of X dissolved in 200 g of water and has a vapor pressure of 754.5 mmHg at the normal boiling point of water. The molar mass of Z is.a)40 g/molb)31.023 molc)31.023 gmd)31.023 g/molCorrect answer is option 'D'. Can you explain this answer?
Question Description
“X”, a nonvolatile organic compound was used to make up a solution. Solution I contains 2.50 g of X dissolved in 200 g of water and has a vapor pressure of 754.5 mmHg at the normal boiling point of water. The molar mass of Z is.a)40 g/molb)31.023 molc)31.023 gmd)31.023 g/molCorrect answer is option 'D'. Can you explain this answer? for UGC NET 2025 is part of UGC NET preparation. The Question and answers have been prepared according to the UGC NET exam syllabus. Information about “X”, a nonvolatile organic compound was used to make up a solution. Solution I contains 2.50 g of X dissolved in 200 g of water and has a vapor pressure of 754.5 mmHg at the normal boiling point of water. The molar mass of Z is.a)40 g/molb)31.023 molc)31.023 gmd)31.023 g/molCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for UGC NET 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for “X”, a nonvolatile organic compound was used to make up a solution. Solution I contains 2.50 g of X dissolved in 200 g of water and has a vapor pressure of 754.5 mmHg at the normal boiling point of water. The molar mass of Z is.a)40 g/molb)31.023 molc)31.023 gmd)31.023 g/molCorrect answer is option 'D'. Can you explain this answer?.
Solutions for “X”, a nonvolatile organic compound was used to make up a solution. Solution I contains 2.50 g of X dissolved in 200 g of water and has a vapor pressure of 754.5 mmHg at the normal boiling point of water. The molar mass of Z is.a)40 g/molb)31.023 molc)31.023 gmd)31.023 g/molCorrect answer is option 'D'. Can you explain this answer? in English & in Hindi are available as part of our courses for UGC NET. Download more important topics, notes, lectures and mock test series for UGC NET Exam by signing up for free.
Here you can find the meaning of “X”, a nonvolatile organic compound was used to make up a solution. Solution I contains 2.50 g of X dissolved in 200 g of water and has a vapor pressure of 754.5 mmHg at the normal boiling point of water. The molar mass of Z is.a)40 g/molb)31.023 molc)31.023 gmd)31.023 g/molCorrect answer is option 'D'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of “X”, a nonvolatile organic compound was used to make up a solution. Solution I contains 2.50 g of X dissolved in 200 g of water and has a vapor pressure of 754.5 mmHg at the normal boiling point of water. The molar mass of Z is.a)40 g/molb)31.023 molc)31.023 gmd)31.023 g/molCorrect answer is option 'D'. Can you explain this answer?, a detailed solution for “X”, a nonvolatile organic compound was used to make up a solution. Solution I contains 2.50 g of X dissolved in 200 g of water and has a vapor pressure of 754.5 mmHg at the normal boiling point of water. The molar mass of Z is.a)40 g/molb)31.023 molc)31.023 gmd)31.023 g/molCorrect answer is option 'D'. Can you explain this answer? has been provided alongside types of “X”, a nonvolatile organic compound was used to make up a solution. Solution I contains 2.50 g of X dissolved in 200 g of water and has a vapor pressure of 754.5 mmHg at the normal boiling point of water. The molar mass of Z is.a)40 g/molb)31.023 molc)31.023 gmd)31.023 g/molCorrect answer is option 'D'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice “X”, a nonvolatile organic compound was used to make up a solution. Solution I contains 2.50 g of X dissolved in 200 g of water and has a vapor pressure of 754.5 mmHg at the normal boiling point of water. The molar mass of Z is.a)40 g/molb)31.023 molc)31.023 gmd)31.023 g/molCorrect answer is option 'D'. Can you explain this answer? tests, examples and also practice UGC NET tests.
Explore Courses for UGC NET exam

Top Courses for UGC NET

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