5. When a solution of Bacl2 is added to a solution of Lizso4, a precipitate form

Question

5. When a solution of Bacl2 is added to a solution of Lizso4, a precipitate forms. a) Show the four ions present in the two solutions with the correct charges. cross out the ions that are always soluble (group I cations, NH4, NO3). b) use Table 2. Do any ion pairs result in an insoluble compound? If so, write the net ionic equation for the reaction. Remember, the net ionic equation only consists of the ions involved in the reaction. (make sure the charges balance). 6. Write the complete formula unit equation for any reaction identified.

Explanation / Answer

a) BaCl2 (aq) --------> Ba2+(aq) + 2Cl-(aq)

Li2SO4 (aq) -------> 2Li+ ( aq) + SO42-(aq)

Li+ and Cl- are cross and soluble

b) Ba2+ and SO42- are cross and form precipitate of BaSO4

Ba2+ (aq) + SO42-(aq) --------> BaSO4(s)

c) Li2SO4 (aq) + BaCl2(aq) --------> BaSO4(s) + 2LiCl(aq)

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