identify the solution that will have a higher boiling point. Explain

Question

1. 1.50 moles of LiOh (strong electroylkte) and 3.00 moles of KOH (strong elecctrolyte) each in 1.0 kg of water
2. 2. 0.40 mole of Al(NO3)3 (strong electrolyte and 0.40 mole of CsCl (strong electrolte) each in 1.0 kg of water.

fill the blanks in below appropriate terms:

3.00 MOLES OF KOH

aL(no3)3

disassociates

four

remains unchanged

CsCl

more

less

one

two

decomposes

1.50 molesof LiOH

three

1. ______in 1.0 kg of water will have a higher boiling point because it has _____particle(s) in solution.
2. 0.40 mole of ___ in 1.0 kg of water has a higher boiling point because each ______ _______ in water to give _______ particle(s), whereas each _____ _______ to give only ________ particle(s).

Answer 1

1). The boiling point will be elevated when a solute is added. The magnitude of the elevation is dependent on the number of particles present. Both LiOH and KOH will produce 2 particles. Therefore, since you have THREE moles of KOH and only 1.5 moles of LiOH, the KOH solution will have the higher boiling point.

2). 0.40 mols Al(NO₃)₃ vs. 0.40 mols CsCl. Each mol Al(NO₃)₃ will provide 4 mols of particles (1 Al³⁺ and 3 NO₃^-) and each mol of CsCl will provide 2 mols of particles (1Cs⁺ and 1 Cl^-). Therefore, the solution with Al(NO₃)₃ will have the higher boiling point.

1.  ___3mols of KOH___in 1.0 kg of water will have a higher boiling point because it has __more___particle(s) in solution.
2. 0.40 mole of __Al(NO3)3_ in 1.0 kg of water has a higher boiling point because each ___mol of Al(NO3)3 dissociates__ in water to give ___4____ particle(s), whereas each _mol of CsCl dissociates___to give only ___2_____ particle(s).