Which of the following substances will dissolve in water?

Question

Quizplus · Accepted Answer

Ionic compounds, such as NaCl (table salt), are highly soluble in water. Because water molecules are polar, they interact with the sodium and chloride ions. This is because polar molecules have atoms with partial positive and negative charges, so they are able to interact with the positively and negatively charged sodium and chloride ions. When an ionic substance dissolves in water, it is broken up into individual cations and anions, which are surrounded by the partially charged water molecules. All phosphates are insoluble, so Sr₃(PO4)₂ is insoluble. Hydroxides are generally insoluble. Mg(OH)₂ is insoluble in water. This means it will not dissolve into solution by breaking apart into magnesium ions and hydroxide ions. All bromides are soluble in water, except those combined with Pb²⁺ so PbBr₂ is insoluble.

Which of the Following Substances Will Dissolve in Water