1800-150-456-789
FlagBACK
Flag Thermal Physics> Two moles of helium, four moles of hydrog...
question mark

Two moles of helium, four moles of hydrogen and one mole of water vapour form an ideal gas mixture. The molar specific heat at constant pressure of the mixture is(neglecting vibrational degrees of freedom):

a> (7/3)R

B> (16/7)R

C> (10/3)R

D> (23/7)R


.......................................

THE CORRECT ANSWER IS (23/7) R

PLEASE GIVE ME A DETAILED SOLUTION

Jitender Pal , 11 Years ago
Grade 9
anser 2 Answers
SURA CHAITHANYA

Last Activity: 7 Years ago

Cv = 4*5R/2 + 2*3R/2 +1*6R/2 /7    =16R/7
Cp = Cv + R = 16R/7 + R  =23R/7
Cv = n1Cv1 + n2Cv2 + n3Cv3  /n1 + n2 + n3

ankit singh

Last Activity: 4 Years ago

CV​ for hydrogen =  25​R
Cv​ for helium =  23R​
VV​ for water vapour =  26R​=3R
∴ (CV​)mix​ =  4+2+14× 25​R+2× 23​R+1×3R​ =  716​R
∴ CP​ = CV​+R
CP​ =  716​R+R
Or, CP​ =  723​R

Provide a better Answer & Earn Cool Goodies

star
LIVE ONLINE CLASSES

Prepraring for the competition made easy just by live online class.

tv

Full Live Access

material

Study Material

removal

Live Doubts Solving

assignment

Daily Class Assignments


Ask a Doubt

Get your questions answered by the expert for free

Other Related Questions on thermal physics

question mark
A container filled with a sample of an Idea gas at the pressure of 1.5atm. the gas is compressed isothermal ly to one fourth of its original volume. What is the new pressure of the gas?
 
thermal physics
0 Answer Available

Last Activity: 2 Years ago

question mark
how do we know the electric field due to an electric dipole of dipole moment P at distance r from the centre of dipole is fiven by .. where theta is angle between p amd r vector..
thermal physics
0 Answer Available

Last Activity: 3 Years ago

question mark
A A mole of helium gas initially at stp undergoes an isovolumetric process in which its pressure falls to half its initial value. The work done by gas is
 
thermal physics
0 Answer Available

Last Activity: 3 Years ago

question mark
  1. 5000 J of heat are added to two moles of an ideal monatomic gas, initially at a temperature of 500 K, while the gas performs 7500 J of work. What is the final temperature of the gas? step by step please
thermal physics
1 Answer Available

Last Activity: 3 Years ago

question mark
Please help me with the  answer of this question  related to radiation graph
thermal physics
0 Answer Available

Last Activity: 3 Years ago