Project ForgeThermodynamics
First Law of Thermodynamics
GATE 2017
Medium
The molar specific heat at constant volume of an ideal gas is equal to 2.5 times the universal gas constant (8.314 J/mol·K). When the temperature increases by 100 K, the change in molar specific enthalpy is __________ J/mol.
2909.5 J/mol(± 1.5 accepted)
Explanation
Cp = Cv + R = 2.5R + R = 3.5R = 3.5×8.314 = 29.10 J/mol·K. ΔH = Cp·ΔT = 29.10×100 ≈ 2909.5 J/mol.
Source: GATE ME 2017 Session 1 (ME-1) (2017)
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