已知C (石墨)+O2(g)=CO2(g) △rHm= -393.5 kJ·mol-1;CO(g)+(1/2)O2(g) = CO2(g) △rHm = - 283.0 k

大学网课 已帮助 人

已知C (石墨)+O2(g)=CO2(g) △rHm= -393.5 kJ·mol-1;CO(g)+(1/2)O2(g) = CO2(g) △rHm = - 283.0 kJ·mol-1,则C(石墨)+(1/2) O2(g)=CO(g) 的反应热为 ?

A.-110.5 kJ/mol

B.110.5 kJ/mol

C.-676.5 kJ/mol

D.676.5 kJ/mol

已知C (石墨)+O2(g)=CO2(g) △rHm= -393.5 kJ·mol-1;CO(g)+(1/2)O2(g) = CO2(g) △rHm = - 283.0 k

热搜:铅的熔点为600.5K,熔化热,100g铅中含有1.08g银