Question

下列依據(jù)熱化學方程式得出的結(jié)論正確的是

A．已知2H₂(g)+ O₂(g) = 2H₂O(g)△H =–483.6kJ·mol^–1，則氫氣的燃燒熱為241.8kJ·mol^–1

B．已知C(石墨，s) = C(金剛石，s)；△H>0，則金剛石比石墨穩(wěn)定

C．已知NaOH(aq)+ HCl(aq) = NaCl(aq) + H₂O(l)；△H =–57.4kJ·mol^–1，則含20.0g NaOH的稀溶液與稀鹽酸完全中和，放出28.7kJ的熱量

D．已知：2C(s) + 2O₂(g) = 2CO₂(g)；△H₁，2C(s) + O₂(g) = 2CO(g)；△H₂則△H₁>△H₂

 

Answer 1

C

解析:略