Class 11 Exam  >  Class 11 Questions  >  The molecular weight of O2 and SO2 are 32 and... Start Learning for Free
The molecular weight of O2 and SO2 are 32 and 64 respectively. At 15°C and 150 mm Hg pressure, one litre of O2 contains ‘N’ molecules. The number of molecules in two litres of SO2 under the same conditions of temperature and pressure will be : [1990]
  • a)
    N/2
  • b)
    N
  • c)
    2N
  • d)
    4N
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
The molecular weight of O2 and SO2 are 32 and 64 respectively. At 15&d...
A ccording to Avogadro's law "equal volumes of all gases contain equal numbers of molecules under similar conditions of temperature and pressure". Thus if 1 L of one gas contains N molecules, 2 L of any gas under the same conditions will contain 2N molecules.
View all questions of this test
Most Upvoted Answer
The molecular weight of O2 and SO2 are 32 and 64 respectively. At 15&d...
°C and 1 atm, the density of O2 is 1.429 g/L and the density of SO2 is 2.927 g/L.

To calculate the mass of a certain volume of gas, we can use the formula:

mass = density x volume

1. For O2:

At 15°C and 1 atm, the molar volume of any gas is 24.45 L/mol (from the Ideal Gas Law). Therefore, the volume occupied by 1 mole of O2 at these conditions is:

V = 24.45 L/mol

The mass of 1 mole of O2 is its molar mass, which is 32 g/mol. Therefore, the density of O2 can be calculated as:

density = mass/volume = (32 g/mol) / (24.45 L/mol) = 1.306 g/L

This value is close to the experimental value of 1.429 g/L, which means that the ideal gas law is a good approximation for O2 at these conditions.

To calculate the mass of 1 L of O2, we can use the same formula:

mass = density x volume = 1.306 g/L x 1 L = 1.306 g

2. For SO2:

Following the same procedure, we can calculate the molar volume of SO2 at 15°C and 1 atm as:

V = 24.45 L/mol

The molar mass of SO2 is 64 g/mol. Therefore, its density is:

density = mass/volume = (64 g/mol) / (24.45 L/mol) = 2.618 g/L

This value is also close to the experimental value of 2.927 g/L.

To calculate the mass of 1 L of SO2, we can use the same formula:

mass = density x volume = 2.618 g/L x 1 L = 2.618 g
Attention Class 11 Students!
To make sure you are not studying endlessly, EduRev has designed Class 11 study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in Class 11.
Explore Courses for Class 11 exam

Similar Class 11 Doubts

Top Courses for Class 11

The molecular weight of O2 and SO2 are 32 and 64 respectively. At 15°C and 150 mm Hg pressure, one litre of O2 contains ‘N’ molecules. The number of molecules in two litres of SO2 under the same conditions of temperature and pressure will be : [1990]a)N/2b)Nc)2Nd)4NCorrect answer is option 'C'. Can you explain this answer?
Question Description
The molecular weight of O2 and SO2 are 32 and 64 respectively. At 15°C and 150 mm Hg pressure, one litre of O2 contains ‘N’ molecules. The number of molecules in two litres of SO2 under the same conditions of temperature and pressure will be : [1990]a)N/2b)Nc)2Nd)4NCorrect answer is option 'C'. Can you explain this answer? for Class 11 2024 is part of Class 11 preparation. The Question and answers have been prepared according to the Class 11 exam syllabus. Information about The molecular weight of O2 and SO2 are 32 and 64 respectively. At 15°C and 150 mm Hg pressure, one litre of O2 contains ‘N’ molecules. The number of molecules in two litres of SO2 under the same conditions of temperature and pressure will be : [1990]a)N/2b)Nc)2Nd)4NCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Class 11 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The molecular weight of O2 and SO2 are 32 and 64 respectively. At 15°C and 150 mm Hg pressure, one litre of O2 contains ‘N’ molecules. The number of molecules in two litres of SO2 under the same conditions of temperature and pressure will be : [1990]a)N/2b)Nc)2Nd)4NCorrect answer is option 'C'. Can you explain this answer?.
Solutions for The molecular weight of O2 and SO2 are 32 and 64 respectively. At 15°C and 150 mm Hg pressure, one litre of O2 contains ‘N’ molecules. The number of molecules in two litres of SO2 under the same conditions of temperature and pressure will be : [1990]a)N/2b)Nc)2Nd)4NCorrect answer is option 'C'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 11. Download more important topics, notes, lectures and mock test series for Class 11 Exam by signing up for free.
Here you can find the meaning of The molecular weight of O2 and SO2 are 32 and 64 respectively. At 15°C and 150 mm Hg pressure, one litre of O2 contains ‘N’ molecules. The number of molecules in two litres of SO2 under the same conditions of temperature and pressure will be : [1990]a)N/2b)Nc)2Nd)4NCorrect answer is option 'C'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of The molecular weight of O2 and SO2 are 32 and 64 respectively. At 15°C and 150 mm Hg pressure, one litre of O2 contains ‘N’ molecules. The number of molecules in two litres of SO2 under the same conditions of temperature and pressure will be : [1990]a)N/2b)Nc)2Nd)4NCorrect answer is option 'C'. Can you explain this answer?, a detailed solution for The molecular weight of O2 and SO2 are 32 and 64 respectively. At 15°C and 150 mm Hg pressure, one litre of O2 contains ‘N’ molecules. The number of molecules in two litres of SO2 under the same conditions of temperature and pressure will be : [1990]a)N/2b)Nc)2Nd)4NCorrect answer is option 'C'. Can you explain this answer? has been provided alongside types of The molecular weight of O2 and SO2 are 32 and 64 respectively. At 15°C and 150 mm Hg pressure, one litre of O2 contains ‘N’ molecules. The number of molecules in two litres of SO2 under the same conditions of temperature and pressure will be : [1990]a)N/2b)Nc)2Nd)4NCorrect answer is option 'C'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice The molecular weight of O2 and SO2 are 32 and 64 respectively. At 15°C and 150 mm Hg pressure, one litre of O2 contains ‘N’ molecules. The number of molecules in two litres of SO2 under the same conditions of temperature and pressure will be : [1990]a)N/2b)Nc)2Nd)4NCorrect answer is option 'C'. Can you explain this answer? tests, examples and also practice Class 11 tests.
Explore Courses for Class 11 exam

Top Courses for Class 11

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