We need to consult the solubility rules for common ionic compounds in water (table 4.1, page 125 of the text) to answer this question. We see that all hydroxides are insoluble except those of the 1A elements and calcium, barium and strontium. Therefore, nickel (II) hydroxide is insoluble.
Table 4.1 indicates that bromides are typically soluble. However, there are important exceptions to this rule: that is, bromides of siver (I), mercury (I) ion, and lead (II) ion are insoluble.
Again, from Table 4.1, we see that all compounds which contain the nitrate ion are soluble.
Insoluble. The only soluble phosphates are those with ammonium ion or an alkali metal as the cation.
Soluble. All acetates are soluble (no exceptions!)
Doug Chapman firstname.lastname@example.org 6/20/08