Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • Engineering
  • Consider the vander waals constants a and b for the following gases ___ Gas Ar</

Consider the vander waals constants a and b for the following gases ___

Gas Ar Ne Kr Xe
a 1.3 0.2 5.1 4.1
b 3.2 1.7 1.0 5.0

Which gas is expected to have the highest critical temperature ?

 

Option: 1

Kr


Option: 2

Xe


Option: 3

Ar


Option: 4

Ne


Answers (1)

best_answer

Critical temperature is the temperature of a gas above which it cannot be liquified whatever high the pressure may be.The KE of gas molecules above this temperature is sufficient enough to overcome the attractive forces .It is represented as T_{c}

\mathrm{T_c=\frac{8 a}{27 \mathrm{Rb}}}

\mathrm{for \: An, T_c=\frac{8 \times 1.3}{27 \times 8.314 \times 3.2}=0.0144}

\mathrm{for\; NC, T_c=\frac{8 \times 0.2}{27 \times 8.314 \times 1.7}=0.0041}

\mathrm{for \; kr, T_C=\frac{8 \times 5.1}{27 \times 8.314 \times 1.0}=0.18}

\mathrm{for\; Xe, T_C=\frac{8 \times 4.1}{27 \times 8.314 \times 5.0}=0.02}

The value of \mathrm{ T_C} is highest for Kr

Posted by

vishal kumar

View full answer

JEE Main high-scoring chapters and topics

Study 40% syllabus and score up to 100% marks in JEE

Similar Questions

Trending Articles/News

anam-khan

NTA Exams 2025 Live: NEET UG date, registration form soon at neet.nta.nic.in; UGC NET revised schedule out
anam-khan

Is it difficult to get into NIT Durgapur? JEE Main cut-offs for BTech programmes
anam-khan

JEE Main Deleted Syllabus 2025: Topics to skip this year; why no optional questions?

Latest Question