Answer to Question #307239 in General Chemistry for Syd Hernan

Question

The molal boiling point constant of water is 0.512ºC/m. If 1 mol cane sugar (342g/mol) is dissolved in 1kg water, the solution will boil at 100.512ºC, assuming standard pressure. By this relationship, half of a mole of sugar (171g) would boil at 100.256 C/m and 2 mol sugar (684g) should boil at 101.024ºC/m. However, these are not necessarily solutions that can be mixed; 684g of sugar is nearly a pound and a half of sugar, which you are supposed to dissolve in a liter of water!

From the given situation above, why is it important to understand the constants relating to water?

Answer 1

The polarity allows it to dissociate the ions in salt and bonds thus dissolving the polar substances.