CaCl2
solution
Na2SO4
solution
CaSO4 white
precipitate
in NaCl
solution
300.23 g
300.23 g 8
In the procedure shown above, a calcium chloride solution is mixed with a sodium
sulfate solution to create the products shown. Which of the following conclusions is
supported by the information in the diagram.
A Sodium ions and chloride ions repel each other when they are in solution.
B The creation of a precipitate adds mass that was previously non-existent.
Precipitation reactions only occur when solution temperatures are decreased.
D Calcium ions and sulfate ions join together to form an insoluble compound.
C