3 . ( a) Use the data given below and calculate A HO , A SO , A GO , and K , at 250 C for the reaction : CHA ( 8) + H2 ( 8 ) - CZHo ( 8 )| ( b )

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3 .( a) Use the data given below and calculate A HO , A SO , A GO , and K , at 250 C for the reaction :CHA ( 8) + H2 ( 8 ) - CZHo ( 8 )|( b ) Calculate A G for the reaction at 250 ' C .( C ) At what temperature ( C ) is A G equal to zero ? In what temperature range is this reaction product -favored ?!CompoundSo,J / mol . KCHA ( 8 )AH . K.J / mol52.26219.56H2 ( 8 )O130. 68CZHo ( 8 )-84.68229.64 .Classify each of the following reactions as one of these four types :". spontaneous at all temperatures\" not spontaneous at any temperature*. spontaneous below a certain temperature but not above. spontaneous above a certain temperature but not belowSee Table 17 . 1 in Tro , Fridgen and Shaw .*( 2 ) 2 NOCI ( 8 ) _ 2 NO ( 8 ) + Cl2 ( 8 ) ;]AH = 78.4 KJ ;AH = - 331 KJ ;AS = 121. 0 J / K( b ) 2 Ag 20 ( s) + C ( s ) _ 4 Ag ( S ) + CO 2 ( 8 );]( C ) Be ( OH ) 2 ( S ) + H2 ( 8 ) - Be ( s ) + 2 H 20 ( 1 ) ;]AH = 333 K) ;`AS = 136 J / K( d ) ( 2 1 2 ( 8 ) + 2 H z ( 8 ) - CHO ( 8) ;]AH = - 311. 4 kj ;]AS = - 33 J / KAS = - 232. 7 J / K