salt water or pond water - differences
2007-01-09 01:54:10 · 8 answers · asked by nickinseminole 1 in Science & Mathematics ➔ Chemistry
100C is the boiling point of water, by definition -- the scale was chosen so that the freezing point was at 0C and the boiling point at 100C.
As for pond water, it kind of depends on the pond. The more dissolved solids you have in the water, generally speaking, the higher the boiling point, due to the increase in molality (the freezing point goes down, too). So a really dirty pond with lots of stuff dissolved in it will have water that boils at a slightly higher temperature, but generally fresh water ponds have relatively little and thus still boil at right around 100C (give or take a few hundredths of a degree)
Seawater, on the other hand, has many times as much salt content as fresh water, and thus has a detectably higher boiling point, about 1.5 to 2 degrees C.
Per Wikipedia:
The change in boiling point can be determined by the equation ΔTB.P.=i·Kb·m, where m is the molality of the solute, i is the Van 't Hoff factor (the number of dissolved particles the solute will create when dissolved), and Kb is the ebullioscopic constant unique to each solvent.
i for NaCl = 2 (we'll assume this for simplicity, but there are actually other salts present)
Kb for water =0.512
m for seawater ~ 0.58 (or 35 g NaCl / 58.442 g/mol / 1000 L)
2007-01-09 05:09:26 · answer #1 · answered by theyuks 4 · 0⤊ 0⤋
The boiling point (or 'saturation temperature') of water depends upon its pressure. At standard atmospheric pressure the boiling point of pure water is 100 degrees Celsius (not Celcius!). The addition of an impuity like salt will raise the boiling point to a small extent.
2007-01-09 03:35:18 · answer #2 · answered by clausiusminkowski 3 · 1⤊ 0⤋
Boiling point for water is 100 degree celcius.
Salt in the water should raise the boiling point of the solution.
2007-01-09 10:36:59 · answer #3 · answered by The Doctor 3 · 0⤊ 0⤋
100 degrees celcius
as impurities in water increases,the boiling point of water increases too...
2007-01-09 02:48:09 · answer #4 · answered by Neelu 2 · 0⤊ 0⤋
100 degree
2007-01-09 02:08:57 · answer #5 · answered by Anonymous · 0⤊ 0⤋
100 degree
2007-01-09 01:58:22 · answer #6 · answered by Bika_eng_egy 1 · 0⤊ 0⤋
100 celsius (at normal perssure) , salt water will boil faster.
2007-01-09 01:58:47 · answer #7 · answered by markymarc999999 2 · 0⤊ 0⤋
http://answers.yahoo.com/question/index?qid=20060702052804AAN9d2F
Don't know about pond water though. Probably pretty close to 100 degrees.
2007-01-09 01:58:28 · answer #8 · answered by bonshui 6 · 0⤊ 0⤋