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Heat of Reaction

A system goes...

Question

A system goes from state 'A' to 'B' via two processes I and II as shown in figure. If $Δ U_{1}$ and $Δ U_{2}$ are the change in internal energies in the processes I and II respectively, then

A

Δ U_{1} = Δ U_{2}

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B

Δ U_{1} < Δ U_{2}

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C

Δ U_{1} > Δ U_{2}

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D

relation between

Δ U_{1} and Δ U_{2}

can not be determined

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Solution

The correct option is A $Δ U_{1} = Δ U_{2}$
Internal energy of the system is independent of path. It only depends on the initial and final stage, $i . e .$ $Δ U_{1} = Δ U_{2}$

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