42 Views

calculate the molar diameter of he from its van der Waals constant b=81 mL mol


Arya Anil 26th Sep, 2020
Answer (1)
Manasi Kadam 30th Sep, 2020

Hi,

Since it is given that van der waal's constant

b= 81 ml/ mol

And we have a formula that goes like

b=4 × volume of 1 mol molecule

b=4Na (4/3πr^3)

Therefore,

r= (3b/16Naπ)^1/3

r=(243/302.59×10^23)^1/3

r~(0.80×10^-23)^1/3

r~ 4.3×10^-7 cm

D= 8.6×10^-7 cm (approx)


Hope it helps!


UPES Integrated LLB Admission...
Apply
Ranked #28 amongst Institutions in India by NIRF | Ranked #1 in India for Academic Reputation by QS University Rankings | 16.6 LPA Highest CTC
SLAT 2025 - The Symbiosis Law...
Apply
Conducted by Symbiosis International (Deemed University) | Ranked #5 in Law by NIRF | Ranked #2 among best Pvt Universities by QS World Rankings
Jindal Global Law School Admi...
Apply
Ranked #1 Law School in India & South Asia by QS- World University Rankings | Merit cum means scholarships
Symbiosis Law School Pune Adm...
Apply
NAAC A++ Accredited | Ranked #5 by NIRF
Nirma University Law Admissio...
Apply
Grade 'A+' accredited by NAAC
ISBR Business School PGDM Adm...
Apply
180+ Companies | Highest CTC 15 LPA | Average CTC 7.5 LPA | Ranked as Platinum Institute by AICTE for 6 years in a row | Awarded Best Business Scho...
View All Application Forms

Download the Careers360 App on your Android phone

Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile

150M+ Students
30,000+ Colleges
500+ Exams
1500+ E-books