4.0 g of a gas occupies 22.4 liters at NTP. The specific heat capacity of the gas at constant volume is 5.0…

4.0g of a gas occupies 22.4 liters at NTP. The specific heat capacity of the gas at constant volume is 5.0 J K-1 mol-1 . If the speed of sound in this gas at NTP is 952 m s-1 , then the heat capacity at constant pressure is
(Take gas constant R=8.3 J K-1 mol-1 )
  1. 7.5 K-1 mol-1
  2. 7.0 K-1 mol-1
  3. 8.5 K-1 mol-1
  4. 8.0 K-1 mol-1

Solution

No. of mole of gas = 1 so molar mass = 4g/mole
v=γRTm  952×952=γ×8.3×2734×10-3γ=1.6=1610=85

CP=8.0 J K-1 mol-1

Asked in: NEET 2015 (Phase 2)

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