Does water with salt boil faster than plain water?(Hypothesis)?

Answer 1

Salt water boils slower than plain water.

As the temperature of water rises, its molecules move around faster, collide more often and release more water vapor gas molecules. When the temperature reaches boiling point - about 100°C (212°F) - the pressure from the release of these molecules (the vapor pressure) becomes greater than atmospheric pressure and water vapor starts to escape as bubbles.

In salty water, Na+ and Cl- ions occupy some of the space between the water molecules. As temperature increases, although the water molecules are moving faster, there are less of them, so there are fewer collisions, less release of water vapor molecules and lower vapor pressure compared to pure water at the same temperature. It takes more energy (temperature) for the vapor pressure of salt water to reach and exceed atmospheric pressure and start to boil.

To raise the boiling point of one liter (34 ounces) of water by 1°C (1.8°F) requires about 58 grams (2 ounces) of salt. This is much more that the amount of salt typically added to boiling vegetables, which is done primarily for taste.

Answer 2

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Plain water. A Liquid will boil when the vapor pressure is equal to the atmospheric pressure. If we start with just barely boiling water and add some salt, the water will stop boiling. The salt has lowered the vapor pressure of the solution. To increase the pressure we need to add heat. To add heat, we turn up the temperature.

Answer 3

I've never heard of it before, but look at it scientifically-

when a substance dissolves into water (for istance) the particles become so small they can fit inbetween water particles. Boiling happens when the liqid is starting to turn into a gas. Gas particles are farther apart that liquid. Because the salt particles are fit inbetween the water particles the should be closer together, therefore taking more heat energy to seperate them.

Salt solution takes a longer time to boil than normal water.

Answer 4

Plain water boils at a lower temperature than water with salt added. Dissolved materials DROP the freezing point and ELEVATE the boiling point of water or any other solvent.

Answer 5

The boiling point of water will rise 1/2 degree for every 58 grams of salt disolved per kilogramm of water. So the answer is, it will take it longer to reach the boiling point with salt added - SLOWER.

Answer 6

No, it would increase the boiling temperature, the density would be increased. This is why we use antifreeze in cars, the disolved compounds decrease the freezing temperature of water, and increase the boiling point. so we can have a very hot engine that doesn't boil off the coolant, and we can have a very cold exposure without freezing the coolant and damaging the interals of the engine.

Answer 7

what i know is that salt lowers the freezing point of water, so i guess it will be harder to boil saltwater. i gues..