The system consists of two moles of molecular oxygen, O 2 (g), contained in a di

Question

The system consists of two moles of molecular oxygen, O2(g), contained in

a diathermic cylinder sealed from the surroundings by a piston, whose position is

locked. In the initial state the gas and cylinder are at a temperature of 278 K and

pressure of 1.00 atm. The process consists of heating the gas cylinder to 328 K at

constant volume.

Calculate Dand DH. If you have sufficient information to calculate q and w, do so. The

molar heat capacity at constant pressure for O2(g) is CP,m O =29.38 J/K.mol. Assume ideal gas behavior.

Explanation / Answer

constant volume,

so

W= 0

now,

using ideal gas behaiviour.

P/T = constant

1/278 = P/328

P = 1.1798 atm

Dh = Cp delta T

Dh = 29.38*(328-278)

Dh = 1469
)

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