Asked by kay
For a lab in school we had to mix together sodium carbonate and calcium chloride and had that go through a filter, finally ending with our final product of calcium carbonate (chalk), my question is that we have to do a graph and the graph shows that as the mass of calcium chloride increases, the mass of the calcium carbonate stays nearly the same (plateau's) WHY IS THAT?
Answers
Answered by
DrBob222
Ca^2+(aq) + CO3^2-(aq) ==> CaCO3(s)
The net ionic equation is shown above. As the Ca^2+ is increased it reacts with carbonate ion and the CaCO3 is increased. At some point, the last of the carbonate is gone (since none is being added); therefore, no matter how much more Ca^2+ is added (from CaCl2), no more CaCO3 can be produced.
The net ionic equation is shown above. As the Ca^2+ is increased it reacts with carbonate ion and the CaCO3 is increased. At some point, the last of the carbonate is gone (since none is being added); therefore, no matter how much more Ca^2+ is added (from CaCl2), no more CaCO3 can be produced.
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