Boiling point is lear for
A) 0.1m Urea
B) 0.2m Urea
C) 0.1m NaCl
D) 0.2m MgCl2
Answers
Answer:
a) 0.1 m urea.
Explanation:
whenever a non volatile substance is dissolved in a solvent,the B.P increases.
higher the concenteration,higher the boiling point.
nacl and mgcl2 are ionic solids,so they will have more boiling point.
that leaves us with non ionic solids~ different concenteration of ureas.
0.2m has more particles.
hence,0.1m urea has the least boiling point.
Answer:
Boiling point is lower for 0.1 Urea
Explanation:
The boiling point elevation happens both when the solute is an electrolyte, such as various salts, and a nonelectrolyte. In thermodynamic terms, the origin of the boiling point elevation is entropic and can be explained in terms of the vapor pressure or chemical potential of the solvent.
When a solute dissolves in a solvent, the vapor pressure decreases, the freezing point decreases, and the boiling point increases.
As the boiling point is inversely proportional to the strength of the electrolyte. stronger the electrolyte , higher will be the boiling point of the electrolyte. because elevation of boiling point is directly proportional to the number of species present in the solution and 0.1M urea is the least strong electrolyte and have least number of species in it means have least number of ions, therefore 0.1M urea will have the least boiling point.