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Sorta true..but not practicle... Posted by REM in Seattle [Email] (#4) [Profile/Gallery] (more from REM in Seattle) on Wed, 8 Jun 2005 20:11:17 In Reply to: Yes, true, salt raises the boiling point of water....., TKC, Wed, 8 Jun 2005 19:19:35 Members do not see ads below this line. - Help Keep This Site Online - Signup |
Old Wives’ Tale – the amount of salt needed to make a significant difference in the boiling point would ruin the food.
From http://van.hep.uiuc.edu/van/qa/section/States_of_Matter_and_Energy/Boiling_Evaporating_and_Condensing/20030104203955.htm :
“For saltwater, the boiling point is raised, and the melting point is lowered. By how much depends on how much salt there is. I'll assume the salt is sodium chloride, NaCl (table salt). The melting point is lowered by 1.85 degrees Celsius if 29.2 grams of salt are dissolved in each Kg of water (called a "0.5 molal solution" of salt. The Na and Cl dissociate right away when dissolved, and so for a 0.5 molal solution of salt, there is a 1.0 molal concentration of ions). The boiling point is raised by 0.5 degrees Celsius for water with 29.2 grams of salt dissolved in each kg of water.”
REM in Seattle
2005 Saab 9-3 Aero Convertible; 5-speed; 4000 miles
1998 Saab 900SET; 5-door; Automatic; 77,000 miles
1984 Saab 900T; 3-door; 5-speed; 242,000 miles (RIP)
_______________________________________ REM in Seattle Current: 2013 Volvo XC60 R-Design, Rebel Blue, 3.0L 6-cyl turbo, Automatic 2024 MINI Cooper S Convertible, 2.0L 4-cyl turbo, 6-speed manual Former: 2005 Saab 9-3 Aero Convertible, Steel Gray metallic, 2.0L 4-cyl turbo, 5-speed 1998 Saab 900SET 5-door, Silver, 2.0L 4-cyl turbo, Automatic 1991 Alfa Romeo Spider convertible, Alfa Red, 2.0L 4-cyl, 5-speed 1984 Saab 900T 3-door, Red, 2.0L 4-cyl turbo, 5-speed
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