Water with salt in it takes more energy to reach boiling point, so it is likely to take longer to boil when the same volume and surface area of water is heated at the same rate.
This is because the salt dissolves in the water to form a solution containing sodium and chloride ions.
The sodium and chloride ions are electrostatically attracted to the water molecules, making the water molecules more inclined to "stick together". This makes it harder for the water molecules to enter gas phase (which is what happens when water boils).
This is because the salt dissolves in the water to form a solution containing sodium and chloride ions.
The sodium and chloride ions are electrostatically attracted to the water molecules, making the water molecules more inclined to "stick together". This makes it harder for the water molecules to enter gas phase (which is what happens when water boils).