Question
Asked Dec 17, 2019
1 views
It takes a time of 22.4 min. for a sample of an unknown gas to leak from a faulty tank valve.
A sample of the same volume of helium required 5.00 min, to leak out. What is the molecular
weight of the unknown gas?
help_outline

Image Transcriptionclose

It takes a time of 22.4 min. for a sample of an unknown gas to leak from a faulty tank valve. A sample of the same volume of helium required 5.00 min, to leak out. What is the molecular weight of the unknown gas?

fullscreen
check_circle

Expert Answer

Step 1

A famous chemist “Thomas Graham” stated that the rate of effusion of any gas depends on molar mass of the gas and it is inversely related to square root of the molar mass.

help_outline

Image Transcriptionclose

Rate oc Molar mass

fullscreen
Step 2

Given data:

help_outline

Image Transcriptionclose

Time required by unknown gas to leak out = 22.4 min Time required by helium gas to leak out = 5.00 min

fullscreen
Step 3

Let both gases travel same distance x. The rate of unknown gas and...

help_outline

Image Transcriptionclose

Distance Rate time Rate unknown gas 22.4 min Rate, ´helium gas 5.00 min

fullscreen

Want to see the full answer?

See Solution

Check out a sample Q&A here.

Want to see this answer and more?

Solutions are written by subject experts who are available 24/7. Questions are typically answered within 1 hour.*

See Solution
*Response times may vary by subject and question.
Tagged in

Science

Chemistry

Related Chemistry Q&A

Find answers to questions asked by student like you
Show more Q&A
add