Published by:
CGP EDU Academic Team
Published on: August 14, 2026
A mixture of methane and ethene in a molar ratio of x : y has an average molecular mass of 20U. The mean molar mass when they are mixed in the molar ratio of y : x will be -
Text Solution
Verified by ExpertsThe correct answer is:
C
The mol. Wt of CH 4 = 16
The mol. Wt of C 2 H 4 = 28
∴ 20 = 
or 16x + 28 y = 20 x + 20 y
or 4x = 8y
or x = 2y
In the gas mix. when the mole ratio of CH 4 and C 2 H 4 is y : x
then avg. mol. wt = 
= 
= 
= 24
Prepare Smarter with CGP Edu
Get practice questions, solutions, and test series in one place.
Write a Review
Share your experience with this question and solution.
Commentary
Send your comment, doubt, correction, or feedback to admin.
Similar Questions
Explore conceptually related problems
As the temperature is raised from to the average kinetic energy of neon atoms changes by a factor…
A gas is found to have a formula . If its vapour density is 70, the value of is
Which of the given sets of temperature and pressure will cause a gas to exhibit the greatest deviat…
The molecular weight of and are 32 and 64 respectively. If one litre of at and 750 mm pressure …
What is the relationship between the average velocity ( v ), root mean square velocity ( u ) and mo…
Consider the following statements : For diatomic gases, the ratio is equal to
(1) 1.40 (lower temp…