A.當(dāng)△H>0,△S<0時(shí),反應(yīng)自發(fā); B.當(dāng)△H<0,△S>0時(shí),反應(yīng)自發(fā); C.當(dāng)△H<0,△S<0時(shí),低溫非自發(fā),高溫自發(fā); D.當(dāng)△H>0,△S>0時(shí),低溫非自發(fā),高溫自發(fā); E.當(dāng)△H>0,△S>0時(shí),任何溫度下均不自發(fā)
A.△H<0,△S<0 B.△H>0,△S<0 C.△H<0,△S>0 D.△H>0,△S>0
A.根據(jù)焓和熵的觀點(diǎn),石墨比金剛石穩(wěn)定; B.根據(jù)焓和熵的觀點(diǎn),金剛石比石墨穩(wěn)定; C.根據(jù)熵的觀點(diǎn),石墨比金剛石穩(wěn)定,但根據(jù)焓的觀點(diǎn),金剛石比石墨穩(wěn)定; D.根據(jù)焓的觀點(diǎn)石墨比金剛石穩(wěn)定,但根據(jù)熵的觀點(diǎn)金剛石比石墨穩(wěn)定; E.△G(金剛石)>△G(石墨)