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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)RB> (16/7)RC> (10/3)RD> (23/7)R.......................................THE CORRECT ANSWER IS (23/7) RPLEASE 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

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