Explanation: It is the polar nature of water that allows salts to dissolve. In petrol, the positive and negative ions within the salt have nothing to be attracted to because everything is of a neutral charge, and so the salt remains as a solid.
Why does salt dissolve in water and not kerosene?
Salt is an ionic molecule. There exists electronegativity difference between Salt which gives polarity to the molecule. … As sodium chloride is polar molecule it will be soluble in polar solvents like water. And insoluble in kerosene (as it is non-polar solvent).
How long does it take salt to dissolve in water?
Boiling water (70 degrees) – fully dissolved in the 2 minute period. Ice cold water (3 degrees) – the salt crystals shrunk to half the size but did not dissolve.
Is salt soluble in water Yes or no?
Salt (sodium chloride) is made from positive sodium ions bonded to negative chloride ions. Water can dissolve salt because the positive part of water molecules attracts the negative chloride ions and the negative part of water molecules attracts the positive sodium ions.
What does not dissolve in kerosene?
The insolubility of kerosene is due to the fact that like dissolves like and hydrocarbons and water both are unlike. Complete step by step answer: > We all know by our common experience that hydrocarbons (kerosene, gasoline, petrol and such) just don’t dissolve in water.
What dissolves in water but not in kerosene?
I am Salt because salt dissolves in polar solvent i.e. water and is insoluble in non-polar solvent i.e. kerosene.
Is salt a solute?
In a NaCl solution, the salt is the solute. … An aqueous solution is a solution in which water is the solvent. A NaCl solution is an aqueous solution. A non-aqueous solution is a solution in which water is not the solvent.
How long does it take salt to dissolve in water without stirring?
The a parameter represents the time taken for the sodium chloride sample to dissolve at 0 °C with no stirring, so this result indicated that the sodium chloride sample would dissolve at 0 °C without stirring in 2457 s (40 min 57 s).
Does salt disappear when dissolved in water?
When NaCl is mixed with water, the strong polar ends of the water molecules attract the positive sodium ions and the negative chloride ions, pulling them apart. Each ion becomes surrounded by water molecules attracted to it. This is why the salt seems to vanish in the water.
Why is my salt not dissolving?
If you use too much salt (or too little water) then you will not be able to dissolve all of it. You can add salt slowly to see approximately how much can be dissolved in a given amount of water (at a given temperature). You can dissolve more salt by adding more water or heating it up.