A.增大壓力 B.增大PNO C.減小PNO D.減小壓力
A.-3.73 B.105.3 C.-1.04×105 D.3.73
298K時(shí),SΘN2=191.50J•K-1•mol-1,SΘH2=130.57J•K-1•mol-1,SΘNH3=192.34J•K-1•mol-1,反應(yīng)為N2(g)+3H2(g)=2NH3(g),則DrSΘ=()J•K-1•mol-1
A.-135.73 B.135.73 C.-198.53 D.198.53