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For the real gases reaction
P \( 2 \mathrm{CO}(\mathrm{g})+\mathrm{O}_{2}(\mathrm{~g}) \rightarrow 2 \mathrm{CO}_{2}(\mathrm{~g}) ; \Delta \mathrm{H}=-560 \mathrm{~kJ} \). In 10

W litre rigid vessel at \( 500 \mathrm{~K} \) the initial pressure is 70 bar and after the reaction it becomes 40 bar. The change in internal energy is
(1) \( -557 \mathrm{~kJ} \)
(2) \( -530 \mathrm{~kJ} \)
(3) \( -563 \mathrm{~kJ} \)
(4) None of these
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