Dear student
Equivalent weight of C in CO2 is 12g/4= 3 gBecause the valency of C is 4 here.
Similarly equivalent weight of C in CO is
12g/2 = 6 gm
Because the valency of C is 2 here.
Hence ratio of equivalent weight of C in CO2 & CO=
= 3/6 = 1/2
= 1 :2
Regards
Arun (askIITians forum expert)