• 2021-04-14
    已知C(石墨)+O2(g) = CO2(g),∆H1 =−393.5 kJ/mol;CO(g)+1/2O2(g) = CO2(g),∆H2 =−283.0 kJ/mol。则2C(石墨)+O2(g) = 2CO(g)的∆H3为( )。