Why does salt change tthe density of water?

Answer 1

When the salt dissolves in the water, the sodium ions and chlorine ions occupy space between the water molecules. As a result, the total volume of the solution is less than the volume of the original water plus that of the salt. In short, the volume of the liquid doesn't increase a lot. The mass of the solution, however, will be the sum of the two original masses.

Since density is mass divided by volume, the density of the solution is equal to the solution's final volume divided by the sum of the masses of the water and the salt. This will be higher than the original water and will depend on how much salt is dissolved in it.

Answer 2

Salt does NOT change the density of water. The density of water is constant. But the density of a salt solution is higher than that of pure water since a denser substance than water is dissolved in the solution.

Answer 3

NaCl or common salt increases the density because density is nothing but mass/volume and mass is the amount of matter contained in it.as salt is mixed in water then quantity of matter contained in the solution increases there by increasing the density.
Ex-dead sea is highest density having sea due to the high salt content and u will never sink in that sea because u r less denser than tht sea and u will float therefore upthrust pushing u up and net weight felt by u is 0

Answer 4

Density is basically how much "stuff" is in something. It can be expressed as mass/ volume. Mass being the amount of "stuff" or solute and the volume being the water or solvent. Adding more salt into the same volume of water increases the "stuff" in the water thus increasing the overall density of the water.

Answer 5

Interactions between water molecules and Na+ and Cl- ions cause the molecules to align differently, resulting in a different spacing among molecules than would be present in fresh water.