Chemistry 12 Unit 3 - Solubility This Assignment includes topics from Lesson 3-1, and material covered on pages 73-87 and 91-95 from Hebden. 1. Complete the table by: [6 marks] i) Stating whether each substance is an electrolyte or not ii) Stating whether each of the following substances will form an IONIC or MOLECULAR solution when dissolved in water iii) Writing a balanced net equation showing the dissolving of each substance in water Substance Electrolyte (Yes/No?) Ionic or Molecular Dissolving Equation AgNO3 (s) CH3CH2OH() PC13 (0) NH4Cl (5) 2. Give three examples of ionic compounds. (formulas must be correct) [3 marks] 3. Give two examples of molecular compounds. (formulas must be correct) [2 marks] 4. Define a saturated solution [1 mark] concentration of a substance in 5. Solubility is the solution at a given temperature. [1 mark] Equations and Solubility -1- Assignment 3-2 Chemistry 12 Unit 3 - Solubility 6. Consider the following equation: Ba(NO3)2(aq) + Na2SO4 (aq) 2 NaNO3 (aq) + BaSO4 (s) a. Write the equation in COMPLETE IONIC form: [1 mark] b. Write the equation in NET IONIC form: [1 mark] 7. Write a balanced dissociation equation for the following compounds: [3 marks] c. ZnCl2 (s) d. K2504 (5) e. Sr(NO3)2 (5) For Questions 8 - 12 make sure each equation is balanced, includes all charges, subscripts, and correct arrow(s)...etc. 8. Write a net ionic equation for dissolving ammonium oxalate. [2 marks] 9. Write a net ionic equation for the crystallization of calcium carbonate. [2 marks] 10. Write a net ionic equation for dissolving ammonium phosphate. [2 marks] Equations and Solubility - 2 - Assignment 3-2 Chemistry 12 Unit 3 - Solubility 11. Write a net ionic equation for the precipitation of strontium sulphite. [2 marks] 12. Write a net ionic equation for the equilibrium present in a saturated solution of magnesium hydroxide. [2 marks] 13. Explain what each of the following terms means: [2 marks] a. Solubility: b. Solubility product: 14. What is the difference between solubility and molar solubility? [1 mark] 15. Calcium fluoride has a molar solubility of 8.80x 102 mol/L at a certain temperature. Express this solubility in grams per litre. [2 marks] Answer 16. The solubility of Ag2CO3 at a certain temperature is 22.9 mg/L. Express this solubility in moles per litre. [2 marks] Answer Equations and Solubility - 3 - Assignment 3-2 Chemistry 12 Unit 3 - Solubility 17. An aqueous solution of potassium phosphate (K3PO4) is mixed with an aqueous solution of magnesium nitrate (Mg(NO3)2). a. Draw an (ion-box) with the four ions involved with this reaction (be sure to show the proper ratio of ions in your drawing. [1 mark] b. Identify the possible products formed: [1 mark] C. Does one of the products have low solubility? If so, which one? [1 mark] d. Write a balanced formula equation for this reaction. Include all subscripts, coefficients, and phases. [2 marks] e. Write a balanced, complete (total) ionic equation for this reaction. Include all subscripts, coefficients and ion charges where necessary. [2 marks] f. Write a net ionic equation for this reaction. Include all subscripts, coefficients and ion charges where necessary. [2 marks] Equations and Solubility - 4- Assignment 3-2