Solubility Curves And Simple Deductions From Them Jamb Chemistry Past Questions

Question 1

9.8g of solid potassium chlorate (KCIO₃) were added to 40 cm³ of water and heated to dissolve all the solid. As he solution cooled, crystals of potassium chlorate started forming at 60°C. The solubility of potassium chlorate at 66°C is therefore?

jamb 1982

• A. 24.5 mole per dm³
• B. 0.2 mole per dm³
• C. 10.0 mole per dm³
• D. 20.0 mole per dm³
• E. 2.0 mole per dm³