# Chapter 4 - Reactions in Aqueous Solution - Section Problems - Page 148: 72

(b) $Ba(NO_3)_2$ and (d) $(NH_4)_3PO_4$ are likely to be soluble in water.

#### Work Step by Step

(a) According to the table 4.2, most sulfates are soluble, but the ones with $Pb^{2+}$ are insoluble. (b) and (d) Almost all nitrates and compounds with ammonium ions are likely to be soluble in water. (c) According to the table 4.2, carbonates are very likely to be insoluble in water.

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