How many of the following compounds are insoluble in water?
KC₂H₃O₂ CaSO₄ SrS AlPO₄

Question

How many of the following compounds are insoluble in water? KC₂H₃O₂ CaSO₄ SrS AlPO₄ A)0 B)1 C)2 D)3 E)4

Quizplus · Accepted Answer

To determine solubility, we need to consider the solubility rules. Based on the rules, we can see that KCS1U1B12S1U1B0HS1U1B13S1U1B0OS1U1B12 would be soluble since all potassium (K+) compounds are soluble, as well as sulfides (S2-), hydroxides (OH-), and most sulfates (SO42-). CaSO4 is insoluble because all sulfates (SO42-) except for those of alkali metals and ammonium (NH4+) are insoluble. SrS would be insoluble because all sulfides (S2-) except for those of alkali metals and ammonium (NH4+) are insoluble. AlPO4 would be insoluble because all phosphates (PO43-) except for those of alkali metals and ammonium (NH4+) are insoluble. Therefore, only CaSO4 and SrS are insoluble in water, giving us a total of 2 compounds.

How Many of the Following Compounds Are Insoluble in Water