Pre-AP Solution Review GPS 14. A crystal of solute is dropped into a solution containing dissolved solute. The crystal falls to the bottom of the beaker.

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Presentation transcript:

Pre-AP Solution Review GPS 14

A crystal of solute is dropped into a solution containing dissolved solute. The crystal falls to the bottom of the beaker but dissolves when stirred. Is the solution saturated, supersaturated or unsaturated? Unsaturated

A crystal of solute is dropped into a solution containing dissolved solute. The crystal falls to the bottom of the beaker but does not dissolve even when stirred. Is the solution saturated, supersaturated or unsaturated? saturated

Explain how a crystal of a solute can be used to determine if a solution is unsaturated, saturated, or supersaturated. If a solute particle is added to a solution and it dissolve the solution is unsaturated. If a solute particle is added to a solution and it does not dissolve even after stirring, the solution is saturated. If solute is added to a solution and does not dissolve but dissolves when heated then remains in solution as it cools, the solution is supersaturated.

A 1.0molar solution of NaCl contains one mole of NaCl for every liter of _________. Solution

Which of the following solvents are polar? Benzene, C 6 H 6 Carbon tetrafluoride, CCl 4 Water Ethanol, C 2 H 5 OH Pentane, C 5 H 12

What is the molarity of a solution that contains mol NaCl in 9.68L solution? M

The mass of NaNO 3 (molar mass 85.0g/mol)in milliliters of a 5.00 molar solution is 319 grams

A student needs to prepare 5.00 liters of a molar Na 2 SO 4 (molar mass g/mol). What is the proper procedure to prepare this solution? 1. Weigh out 178 grams of Na 2 SO Transfer the Na 2 SO 4 to a 5.00L volumetric flask and dilute to volume with water.

How many grams of NaNO 3 are needed to prepare 750. mL of a 0.575M solution? (molar mass of NaNO g/mol) 36.7 grams

A 44.0mL sample of 6.0 M HNO 3 is diluted to mL. What is the molarity of the new solution? 0.33M

Write the equation for the dissolution of MgCl 2(s) ? MgCl 2(s) Mg 2+ (aq) + 2Cl - (aq)

Write the equation for the dissolution of Na 2 SO 4(s)? Na 2 SO 4 (s) 2Na 1+ (aq) + SO 4 2- (aq)

For a solution at equilibrium, what is the relationship of the rate of dissolution as compared to the rate of crystallization? a) The rate of dissolution is greater than the rate of crystallization. b) The rate of dissolution equals the rate of crystallization. c) The rate of dissolution is less than the rate of crystallization. d) There is no correlation. B

Colligative properties such as boiling point elevation and freezing point depression depend on this. The concentration or number of solute particles that are added.

Explain why a beaker containing a pure liquid substance boils at a lower temperature than a beaker containing a solution made with the same pure liquid substance. The beaker with the solution contains the pure liquid substance and a solute. The addition of a solute raises the boiling point of a substance.

Is a solution of 50g of NaNO 3 at 0 o C saturated or unsaturated? If unsaturated how much more solute can dissolve? It is unsaturated. About 22g can be dissolved.

Is a solution of 50g of KNO 3 at 40 o C saturated or unsaturated? If unsaturated how much more solute can dissolve? It is unsaturated. About 13g can be dissolved.

Is a solution of 30g of KClO 3 at 70 o C saturated or unsaturated? If unsaturated how much more solute can dissolve? It is saturated.