1.

For the reaction, 2CO+O_(2)rarr2CO_(2), DeltaH=560 kJ. Two moles of CO and one mole of O_(2) are taken in a container of volume 1L. They completely form two moles of CO_(2), the gases deviate appreciably from ideal behaviour. If the pressure in the vessel changes from 70 to 40 atm, find the magnitude (absolute value) of DeltaU at 500 K (1 L atm = 0.1 kJ)

Answer»

563
575
585
595

Solution :`DeltaH=DeltaU+Delta(PV)`
`DeltaH=DeltaU+VDeltaP`
`DeltaU=DeltaH-VDeltaP=-560-1xx30xx0.1`
ABSOLUTE VALUE = 563 KJ.


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