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Q.

The volume of 1 kg of hydrogen gas at N.T.P is 11.2 m3. Specific heat of hydrogen at constant volume is 10046J kg–1K–1. Find the specific heat at constant pressure in Jkg-1k-1.

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a

12020

b

14220

c

16340

d

18230

answer is B.

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Detailed Solution

m=1kg;v=11.2m3;ρ=1atm=1.01×105Pa;T=273KCv=10046JKg−1k−1;Cp=?Cp−Cv=r;Cp=r+CvPV=mRTr=PVMT=1.01×105×11.21×273=4143.59Cp=10046+4143.59=14189≈14220Jkg−1k−1

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