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

Introduction to General, Organic and Biochemistry
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Chapter4: Chemical Reactions
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Problem 4.20P: 4-20 Calcium oxide is prepared by heating limestone (calcium carbonate, CaCO3) to a high...
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An excess oxalic acid, H2C2O4, 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 + H2C2O4 → 2NH, + C20,?
Ca?" (aq) + C»0,² (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
Transcribed Image Text:An excess oxalic acid, H2C2O4, 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 + H2C2O4 → 2NH, + C20,? Ca?" (aq) + C»0,² (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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