List the following strong electrolytes solutions in order of increasing boiling point.
a. 0.1 M CaCl2
b. 0.1 M AlCl3
c. 0.1 M CaS
To determine the order of increasing boiling points for the given strong electrolyte solutions, we need to consider the concentration and the nature of the solute.
Boiling point is primarily determined by the strength and number of intermolecular forces present in the solution. In general, stronger intermolecular forces lead to a higher boiling point.
Let's analyze each solution:
a. 0.1 M CaCl2:
Calcium chloride (CaCl2) is an ionic compound that dissociates into calcium ions (Ca^2+) and chloride ions (Cl-) when dissolved in water. Both calcium and chloride ions are highly charged and can form strong ionic interactions with water molecules. As a result, the solution will have strong intermolecular forces, leading to a higher boiling point.
b. 0.1 M AlCl3:
Aluminum chloride (AlCl3) is also an ionic compound that dissociates into aluminum ions (Al^3+) and chloride ions (Cl-) when dissolved in water. Like calcium chloride, aluminum chloride also forms strong ionic interactions with water, resulting in a solution with strong intermolecular forces and a higher boiling point.
c. 0.1 M CaS:
Calcium sulfide (CaS) is another ionic compound that dissociates into calcium ions (Ca^2+) and sulfide ions (S^2-) when dissolved in water. Similar to the previous compounds, the resulting solution will have strong intermolecular forces due to the interactions between the ions and water molecules.
Based on the analysis, we can conclude that the order of increasing boiling points for the given solutions is as follows:
c. 0.1 M CaS < a. 0.1 M CaCl2 < b. 0.1 M AlCl3