Solubility: JAMB Chemistry Past Questions and Answers

What the JAMB syllabus covers in Solubility

Our summary: Saturated and unsaturated solutions, solubility curves and calculations, useful solvents, and suspensions and colloids.

• Unsaturated, saturated and supersaturated solutions (Solubility curves and simple deductions from them (solubility defined in terms of mole per dm³) and simple calculations.)
• Solvents for fats, oil, perspiration and paints and the use of such solvents for the removal of stains
• True and false solutions (suspensions and colloids) (Properties and examples. Harmattan haze and water paints as examples of suspensions, fog, milk, blood, aerosol spray, emulsion paints and rubber solution as examples of colloids.)

Objectives

• distinguish between the different types of solutions;
• interpret solubility curves;
• calculate the amount of solute that can dissolve in a given amount of solvent at a given temperature;
• deduce that solubility is temperature-dependent;
• relate nature of solvents to their uses;
• differentiate among true solutions, suspensions and colloids;
• compare the properties of a 'true' solution and a 'false' solution; and
• provide typical examples of suspensions and colloids.

Syllabus content © The Joint Admissions and Matriculation Board (UTME).