Assignment (Class 9) - Solution Type and Their Characteristics, Concentration and Saturation

  1. What is meant by solute, solvent and solution ?
  2. Are the solutions homogeneous or heterogeneous ?
  3. What is meant by an unsaturated solution?
  4. What are (a) aqueous solution (b) non- aqueous solution? Give examples of each.
  5. Why is water called universal solvent?
  6. What are the advantages of preparing/using solutions?
  7. How much water should be added to 15 g of sugar to prepare 15% sugar solution?
  8. How is the concentration of  any solution expressed in terms of mass-by-volume percentage ?
  9. A student dissolve 32 g of potassium nitrate in water to prepare 200 ml of the solutions. What is the concentration of the solution in terms of mass-by-volume ?
  10. What is a saturated solution ? How to prepare a saturated solution of a given solute ? 
  11. What happens when the temperature of a saturated sugar solution is increased ?
  12. What is the effect of change in temperature on the solubility of solid salt in water ?
  13. 5ml of acetone is mixed with water to make a volume of 50 ml . What is the concentration of acetone in the solution ?
  14. Which of the following contains lesser solute at any given temperature and pressure ?
      1. saturated solution 
      2. unsaturated solution
  15. The solubility of a compound X in water at various temperature is given below :
  16. Temperature (°c) : 10°    20°    40°    60°    80°
           Solubility (g) :  24     35      43     53      65
    What mass of the compound X would be needed to make a saturated solution in 100 g of water at 40°C ?
Educator

M.Sc. in Chemistry, B.Ed. & 2 times CTET Qualified (2017 & 2019)

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