... lm theo cỏch khỏc m ỳng cho im ) B GIO DC V O TO K THI CHN HC SINH GII QUC GIA THPT NM 2012 D tho HNG DN CHM THI CHNH THC Mụn: HO HC Ngy thi th hai: 12/01/2012 Cõu (4,0 im): 1,5 im; 2,5 im ... = 11,83 (oC) Bin thi n entropi ca h ( S h) bng tng bin thi n entropi viờn nc ỏ t -25 oC lờn 11,83 oC ( S n) v bin thi n entropi hn hp ru nc t 25 oC xung 11,83 oC ( S hhr) Bin thi n entropi ca ... (H0p) v bin thi n nng lng t Gipx tiờu chun (G0p) ca phn ng (2) Hóy nhn xột s bin thi n theo nhit ca H0p v G0p Th mt viờn nc ỏ cú lng 20 gam -25 oC vo 200 ml ru Vodka-H Ni 39,5o (gi thit ch cha...