(1)CH 4+2O 2
CO 2+2H 2O
(2)C 60+60O 2
60CO 2 (2)CO 3 2- (4)12:3:8
(5)CO 2+H 2O ===H 2CO 3 (6)CO 2+2NaOH== Na 2CO 3+H 2O