The volume of 1kg of hydrogen gas at NTP is 11.2m3 . Specific heat of hydrogen at constant volume is 100.46J/kg/K. Find the specific heat at constant pressure is J/kg/K. (Round off to the nearest integer)

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The volume of 1kg of hydrogen gas at NTP is $11.2 m^{3}$ . Specific heat of hydrogen at constant volume is 100.46J/kg/K. Find the specific heat at constant pressure is J/kg/K. (Round off to the nearest integer)

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answer is 142.

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Detailed Solution

NTP $\Rightarrow$ Volume = $0.112 m^{3}$

T=293k, P=10atm, m=1kg,

$C_{V} = 100.6 J / k g - k$

From $P V = n R T$

$R = 41.6 J / k g - k$

We know $C_{P} = C_{V} + R$

$C_{P} = 142.2$

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