Question

given 0.0450 M ca(no3)2 and 0.0350 M fe(no3)2. when i separate them, which compound should be used? Na2co3(aq), Hcl(aq), or naoh(aq)? . and which will precipitate first?

I went with hcl, and for question two, fe^2+

Answer 1

or im thinking naoh, since hydroxide ions can form with fe^2+ to form a solid.

Answer 2

nvm i got it. it is naoh.