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Calculate AS rxn for the following reaction. The S for each species is shown below the reaction. C4H2(g)+ 2 H2lg)2C2H3(g) Given: S°J/mol K) 18 3.0 24 surmorK) : C4H2 18 ;·H2-3.0 ; C2H3-24 O a. +24 JK O b. 24 J/K ??. 27 JK d.-27 J/K Oe-3.0 J/K
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Answer #1

Answer:

\Delta SoRXN is given as

?S°rxn = ? S°f (products) - ? S°f (reactants)

?S°rxn = [2* S°f C2H3(g)] - [S°f C4H2(g) + 2*S°f H2(g)]

?S°rxn = [2* (+24)] - [(+18) + 2*(+3)]

?S°rxn = +24 JK

Answer option: A +24 JK

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