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When salt dissolves in water the sodium and chloride ions separate.Explain why this might occur?
When salt dissolves in water, the water molecules surround the sodium and chloride ions through a process called hydration, which weakens the ionic bonds holding the salt together. This ultimately leads to the separation of sodium and chloride ions in the solution.
What happens to the particles when salt dissolves in water?
At the simplest level, the salt ions separate and mix up with the water molecules. If you are looking for a more sophisticated picture, the sodium ions and the chloride ions break away from the crystal lattice and become surrounded by water molecules, making hydrated ions, or aquo complexes, and these mix up with the water particles.
What group on the periodic table form positive 2 ions?
The answer expected is group 2, the alkaline earths.However doubly charged cations can only exist in crystals or in aqueous solution, where they vary from having a solvation shell around them (Ca, Sr, Ba) to being in a tight complex with the water (Be, Mg).This then leads to other ions with a doubly charged aquo-complex: all of groups 10 and 12, along with Ti, Cr, Mn, Fe, Co, Cu.
