Does saltwater or plain water boil faster?

Question

i need to research on this before December 5th
and i need your help.

Answer 1

saltwater boil faster.

Answer 2

Adding any impurity to water, increased the time needed for water to boil. so plain water will boil fastest and here is why The boiling point of water can also be changed by adding impurities in the water. Impurities include salt, sugar, and other dissolving molecules. Generally, impurities increase the boiling point of water. A simple explanation of this is that the impurities dilute the concentration of water (the number of water molecules per unit volume decreases), and the number of molecules that can vaporize at any give temperature decreases. The result is that a higher temperature is required to achieve the same vapor pressure. Concentrated sugar-water solutions that are used for making candies and caramel boil at temperatures exceeding 150 °C.

Answer 3

Plain. Addition of impurities raises the boiling point of liquids, and lowers their melting point, thus the saltwater will boil at a higher temperature. Of course this is not a research, so get cracking.

Answer 4

Pure water will boil faster.

By adding salt to the water you slightly raise its boiling point, therefore it requires more energy to reach boiling point, taking longer (provided the rate of energy input to both pure and salt water is equal).

Also, cooks add salt to raise the boiling point, which helps the food cook slightly faster, as its immersed in a hotter liquid.

Answer 5

Plain water.

As soon as any of the salt dissolves in the water, the boiling point of
the water will begin to rise -- by about one half degree Celsius for every 58 grams of salt dissolved per kilogram of water.

Answer 6

http://en.wikipedia.org/wiki/Boiling-point_elevation

adding salt will raise the boiling point.

pure water boils at 100 deg. C
salt water e.g. 105 C

for same amount of heat at bottom the salt water takes longer to boil.

plain water will boil first.

Answer 7

salt water.
this is why cooks will add salt to make water boil faster for example when putting water to boil for spaghetti.

The chemical reason for this is that the Chlorates in salt lower the boiling temp of water because the salts will hewat up and burn a lot faster than normal H20's

Answer 8

Boiling point is raised approx 0.5 degs C per molal of dissolve particles. This means it takes longer to boil, the higher the dissolved concentration.

Freezing point of water is depressed approx 1.8 degs C per Molal.

Answer 9

Pure water has a boiling point of 100°C. Impurities will lower this down, so the salt water will boil "faster".

Indicentally if you add salt to pure water thats just been boiled it will explode.

Answer 10

Plan water
Cooks add salt so it boiles hotter cooking faster.

Answer 11

i think they both boil at the same time but test it all you need is a thermometer and make sure the water is both the same temp then turn on the stove which ever boils faster is the winner. i think they will both boil at the same time