HARDMCQ SINGLEIChO (Chemistry Olympiad)Physical ChemistryThermodynamics and ThermochemistryAchiever Section

A diatomic gas at pressure P, compressed adiabatically to half of its volume, what is the final pressure?

A.(2)₁,4P✓ Correct

B.P/(2)₁.4

C.(2)₅/3P

D.P/(2)₅/3

Explanation

For adiabatic conditions, PV Constant 1 1 2 2 2 1 1 P V P V ;V V 2 1 2 1 2 V p p V [For diatomic gas, 1.4 ] 1.4 1 2 1 1 V 2 p p V x 1.4 1.4 2 1 P P 2 2 P

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