Insert DIawL Roma 12 A A-,- Section 4. 5. A solution is sitting undisturbed on a
ID: 589635 • Letter: I
Question
Insert DIawL Roma 12 A A-,- Section 4. 5. A solution is sitting undisturbed on a side shelf in the laboratory. A smali crystal of solute from which the solution is made was gently dropped into the solution. Suddenly, a mass of crystals forms and settles to the bottom of the container. Which word best describes the solution?_ Answer Section 4.2 Which is an electrolyte? a glucose, CaHO b. caleium chloride, CaCl c. sucrose, CuH Ou d. acetone, CH COCH e. ethyl alcohol, CH,OH Section 4.1 7. At room temperature the solubility of table salt in water is 359 g/L of water. If a solution was prepared at a high temperature with 20 g of table salt in 100 mL of water and then k to room temperature the solution would best be described as which of the following? (Assume no precipitate has fornmed.) a. A saturated solution. b. An unsaturated solution. c. A supersaturated solution. d. An incomplete solution | e. A dominate solution. Section 4.2 8. How many ions are produced when CaHi2Os dissolves in water? a. 0 b. 2 c. 4 d. 6 e. 12 Section 4.2 9. Which is a nonelectrolyte? a. barium nitrate, Ba(NO>) b. calcium chloride, CaCl c. sodium chloride, NaCl d. methyl alcohol, CH OH e. potassium sulfate, K SO4Explanation / Answer
Section 4.1
5) The valid term is crystallization.
Crystallization is a chemical process by which a crystal forms from a supersaturated solution of of the same solute. Crystallization is dependent on air pressure, temperature and time of liquid evaporation. Crystallization is a two step process involving nucleation followed by crystal growth.