Why does salt dissolve in hot water?

Answer 1

because it smell good

Answer 2

Because it is soluble.

Salt is comprised of two different elements (Na-sodium and Cl-chlorine) through an ionic bond. When the salt hits the water, the ionic bonds slowly start to break down and you are left with the ion Na+1 and Cl-1 that float freely in the water.

Furthermore, as long as the solution isn't saturated yet, you can't see the salt particles because there are more water molecules than salt molecules. The salt molecules squeeze in the space between water molecules.
Because water is a solvent

Answer 3

Salt dissolves in cold water too. Warming the water makes the salt dissolve faster.

The system energy is higher in a warmer system. The higher energy state makes it easier for the salt molecules to dissociate, speeding the process of dissolution,

Since all the particles (molecules and ions) in the system move at higher speeds, the process of diffusion is more rapid as well.

Answer 4

salt lowers the boiling temperature of water, causing water with salt in it to boil sooner

- The above answer is incorrect. Adding salt to water will increase the boiling point of water, causing water with salt in it to take longer to boil.

Answer 5

Elevation of boiling point is one of the colligative properties ofa solution. When a non-electrolyte solute(here, salt) is added to a pure solvent(here, water), the vapour pressure of the the solution is lowered. Hence, the boiling point of the solution is also raised since boiling point is the temperature at which the vapour pressure of a liquid becomes equal to the atmospheric pressure.

Answer 6

It doesn't actually raise its temperature, it just raises its boiling point. Therefore you can heat it to a greater temperature without it boiling or evaporating.

increase, decrease

Answer 7

Increasing temperature makes the hyration energy greater than the energy of the crystal lattice of the salt, causing it to break and hence soluble.

Answer 8

Rising the temperature the solubility is higher but for sodium chloride the effect is not so important.