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What is the name given to a change which the calcium chloride crystal has undergone?
The change a calcium chloride crystal undergoes when it absorbs water from the air is called deliquescence. This process causes the crystal to dissolve and form a solution as it absorbs moisture.
Why does a mixture of sodium chloride and water conduct electricity but sodium chloride crystal does not?
Sodium chloride solution is an electrolyte containg ions as Na+ and Cl-. Sodium solid crystal is not an electrolyte, is not dissociated.
How does the strength of the attraction between water molecules and sodium and chloride ions compare with the strength of the attraction between the sodium ions and chloride ions?
The attraction between water molecules and sodium/chloride ions (hydration) is stronger than the attraction between sodium and chloride ions in a crystal lattice (ionic bond). This is because water can surround and solvate the ions, breaking up the crystal structure and allowing them to move freely in solution. Sodium and chloride ions in a crystal lattice are held together by strong ionic bonds due to the opposite charges of the ions.
Why does sodium chloride and water conduct electricity but a sodium chloride crystal does not?
In water sodium chloride is dissociated and the solution become an electrolyte, electrically conductive. The solid NaCl is not an electrolyte.
Is Sodium chloride do they conduct electric city?
Sodium Chloride solution (dissolved in water) conducts electricity, and molten Sodium Chloride conducts electricty, but dry crystal Sodium Chloride does not conduct electricity.
What force would you expect between sodium ions and chloride ions in a crystal of sodium chloride?
(+)--(-) positive and negative
What is formed once the ions in the salt crystal have completely dissociated from one another?
Once the ions in the salt crystal have completely dissociated, the resulting solution will contain individual sodium and chloride ions in the water.
How does sodium and chloride particles are arrange in a crystal?
Sodium chloride forms a crystal lattice structure where sodium ions are surrounded by chloride ions and vice versa. The chloride ions are arranged in a face-centered cubic lattice, while the sodium ions occupy the octahedral holes in between the chloride ions. This arrangement maximizes the attraction between oppositely charged ions and creates a stable crystal structure.
What happens when a crystal of salt is dropped into an unsaturated solution of the same salt?
The crystal of salt will dissolve in the unsaturated solution until equilibrium is reached, where the rate of dissolution equals the rate of crystal formation. The concentration of the salt in the solution will increase until it reaches saturation point.
What would be formed when sodium chloride is dissolved in water?
When sodium chloride is dissolved in water, it dissociates into sodium ions (Na+) and chloride ions (Cl-). This forms a solution of sodium chloride where the ions are free to move and conduct electricity.
How would you obtain pure crystals of calcium chloride?
To obtain pure crystals of calcium chloride, you can start by dissolving calcium chloride in water to form a saturated solution. Then, allow the solution to cool and evaporate slowly, which will cause calcium chloride crystals to form. Once the crystals have formed, they can be filtered and dried to obtain pure crystal calcium chloride.
What can you say about the relative magnitudes of the lattice energy of ammonium chloride and its heat of hydration?
The lattice energy of ammonium chloride is typically greater than its heat of hydration due to the strong electrostatic attractions between the positively charged ammonium ions and negatively charged chloride ions in the crystal lattice. While the heat of hydration refers to the energy released when water molecules surround and interact with the individual ions in solution.
