Have each group member look up the K_sp for a different compound.

Calculate the molar solubility. Do the numerical values suggest that the compound is soluble or insoluble?

Compare answers with the solubility rules from Chapter 5, and have each group member present his or her findings to the group.

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TABLE 5.1 Solubility Rules for lonic Compounds in Water Compounds Containing the Following lons Are Generally Soluble Lit, Na+, K+, and NH NO3 and C₂H3O2 CI, Br, and I SO4²- Compounds Containing the Following lons Are Generally Insoluble OH and S²- CO3²- and PO4³- Exceptions None None When these ions pair with Agt, Hg₂+, or Pb²+, the resulting compounds are insoluble. When SO² pairs with Sr²+, Ba²+, Pb²+, Ag+, or Ca²+, the resulting compound is insoluble. Exceptions When these ions pair with Lit, Na+, K+, or NH4+, the resulting compounds are soluble. When S² pairs with Ca+, Sr, or Ba²+, the resulting compound is soluble. When OH pairs with Ca²+, Sr²+, or Ba²+, the resulting compound is slightly soluble. When these ions pair with Lit, Na, K, or NH4*, the resulting compounds are soluble.