What is the complete net ionic equation for the following: A)lithium sulfate and

Question

What is the complete net ionic equation for the following:
A)lithium sulfate and strontium chloride
B)potassium bromide and calcium sulfide
C)chromium(III) nitrate and potassium phosphate

Explanation / Answer

The key to net ionic equations is knowing some basic solubility rules such as http://www.files.chem.vt.edu/RVGS/ACT/no… Lithium sulfate is soluble. (Li is grp 1, most sulfates are soluble). Write it as 2Li1+ + (SO4)2-. (actually the parentheses aren't needed if you can do superscripts.) Strontium chloride is soluble, most binary compounds of group 17 elements (halides) are soluble. Write it as Sr2+ + 2Cl1-. Predict the products. Confirm in your mind that this will be a double displacement type reaction. The products will be the outer ions (lithium chloride) and the inner ions (strontium sulfate) Don't change the order of the ions. If it's first in the reactant, it's first in the product. Identify solubility of products. lithium chloride is soluble. strontium sulfate is not soluble. Sr is an exception to the "sulfates are soluble" rlule. The IONIC EQUATION looks like 2Li+ + SO4 2- + Sr2+ + 2Cl- --->2Li+ + 2Cl- + SrSO4. You get the NET IONIC EQUATION by removing ions that exist on both sides of the equation Sr2+ + SO4 2- ----> SrSO4 is all that remains. Source(s): http://www.files.chem.vt.edu/RVGS/ACT/no… 1. All common compounds of Group I and ammonium ions are soluble. 2. All nitrates, acetates, and chlorates are soluble. 3. All binary compounds of the halogens (other than F) with metals are soluble, except those of Ag, Hg(I), and Pb. Pb halides are soluble in hot water.) 4. All sulfates are soluble, except those of barium, strontium, calcium, lead, silver, and mercury (I). The latter three are slightly soluble. 5. Except for rule 1, carbonates, hydroxides, oxides, silicates, and phosphates are insoluble. 6. Sulfides are insoluble except for calcium, barium, strontium, magnesium, sodium, potassium, and ammonium.

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