3.3 CHAPTER 3. SOLUTIONS AND SOLUBILITY
- Factors that affect solubility are the quantity of solute and solvent, temperature, the intermolec-
ular forces in the solute and solvent and other substances that may be in the solvent.
Chapter 3 End of Chapter Exercises
- Give one word or term for each of the following descriptions:
(a) A type of mixture where the solute has completely dissolved in the solvent.
(b) A measure of how much solute is dissolved in a solution.
(c) Forces between themolecules in a substance. - Which one of the following will readily dissolve in water?
(a) I 2 (s)
(b) NaI(s)
(c) CCl 4 (l)
(d) BaSO 4 (s)
(IEB Paper 2, 2005) - In which of the following pairs of substances will the dissolving processhappen most
readily?
Solute Solvent
A S 8 H 2 O
B KCl CCl 4
C KNO 3 H 2 O
D NH 4 Cl CCl 4
(IEB Paper 2, 2004) - Which one of the following three substances is the most soluble inpure water at
room temperature?
Hydrogen sulphide, ammonia and hydrogen fluoride - Briefly explain in terms of intermolecular forces why solid iodine does not dissolve
in pure water, yet it dissolves in xylene (a non-polar, organic liquid) at room temper-
ature.
(IEB Paper 2, 2002)
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