An excess oxalic acid, H2C¿O4, is added to an aqueous solution of the sample which contains Calcium (Ca). Ammonia (NH3) is then added, which neutralizes the acid and causes essentially all of the calcium in the sample. The reactions are: 2NH3 + H2CO4 2NH, + C0? Ca?" (aq) + C20? (aq) → CaC,O, (s) From the given reactions, which is/are the precipitate(s)? A. Oxalate ion B. Calcium (Ca) C. Ammonium and oxalate ions D. Calcium oxalate

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A: Welcome to bartleby !

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