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Substance Standard entropy of substance(JK^-1mole^-1)
CO_2(g) 213
CO_(g) 197
O_2(g) 205
$∆_{r} S^{°}$ for the reaction 2CO_2(g) $\to$ 2CO_(g)+ O_2(g) is

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-183 kJ/K

183J/K

183kJ/K

-183J/K

answer is D.

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Detailed Solution

$∆_{r} S^{°}$ = $2 ∆ S_{(CO, g)}^{°} + ∆ S_{(O_{2}, g)}^{°} - 2 ∆ S_{({CO}_{2}, g)}^{°}$

= 2(197)+205 - 2(213) =183J/K

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