1.

For a gaseous reaction at 300K, DeltaH - DeltaU = - 4.98 kJ assuming that R=8.3 JK^(-1) mol^(-1), Deltan_((g)) is

Answer»

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`-2`
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Solution :`DeltaH=DeltaE+DeltanRT`
`DeltanRT=DeltaH-DeltaE`
`Deltanxx8.3xx300=-4.98xx10^(3)`
`Deltan=-2`.


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