Boiling Point, Solutes, and Superheating
Most recent answer: 05/24/2013
- deepak solanki (age 19)
delhi
It's hard to say. For pure water near sea level, the boiling point is 100°C. Higher up, it boils at lower T. However, if there are no bubbles, little pieces of dirt, teflon surfaces, etc. in the water it can heat up a little past the ideal boiling point before actual boiling begins. The reason for this "superheating" (see ) is very similar to the reason that water can be "supercooled", which we discuss on many other answers. Superheated water can be a bit dangerous, because if you have a cup of it and then trigger the boiling (see this movie ), the boiling is sudden, like an explosion.
So without further information, I can't say if you had pure water that superheated a bit or if you had water with some solutes, such as salt or sugar, in it.
Mike W. (posted without checking until Lee returns)
(published on 05/24/2013)