What 3 things that make sugar dissolve faster in tea?
What is stirring, heat, increase in surface area
100
A gas has a solubility in water of 3.0 g/L at a pressure of 1.0 atm. What pressure is needed to produce an aqueous solution containing 5 g/L of the same gas?
What is 1.67 atm
100
The difference in temperature between the freezing point of a solution and the freezing point of the pure solvent.
What is freezing point depression
100
Energy stored in chemical bonds
What is chemical potential energy
100
A device that measures heat lost or gained
What is a calorimeter
200
A solution that contains the maximum amount of solute in a solvent.
What is a saturated solution
200
A solution has a volume of 2.0 L and contains 55 g NaCl. What is the molarity of the solution?
What is 0.47 M
200
How many particles does the following dissociate into?
Al(OH)3
What is 4
200
the SI unit of energy
What is Joules (J)
200
Delta H is on the product side, or it is negative
Endothermic or Exothermic
What is exothermic
300
Liquids that are insoluble in one another are said to be this.
What is immiscible
300
How many milliliters of a solution of 4 M KI are needed to prepare 100 mL of 3 M KI?
What is 75 mL
300
What is the boiling point of a solution that contains 1.25 mol calcium chloride in 1.4 kg of water? Kb = 0.512
What is 1.37 degrees Celsius
300
Ice melts. Is this an exothermic reaction or endothermic reaction?
What is endothermic reaction
300
Heat is the same thing as ___
What is enthalpy
400
At a given temperature, the solubility of a gas in a liquid is directly proportional to the pressure of the gas above the liquid
What is Henry's Law
400
Calculate the molality of a solution prepared by dissolving 10.0 g of NaCl in 500 g of water.
What is 0.34 m
400
Boiling-point elevation and freezing-point depression both depend on the number of ______
What is particles
400
The amount of heat required to raise the temperature of 1 g of a substance 1 degree Celsius
What is specific heat (C)
400
A pebble is heated and placed in a foam calorimeter containing 20 mL of water at 20 degrees Celsius. The water reaches a maximum temperature of 25 degrees Celsius. How many joules of heat were released by the pebble? The specific heat of water is 4.18.
What is 418 J
500
A solution that contains more solute than it can theoretically hold at a given temperature.
What is supersaturated
500
What is the mole fraction of ethanol in a solution made by mixing 10 mol of ethanol with 25 mol of water?
What is 0.29
500
What mass of NaCl would have to be dissolved in 1.0 kg of water to raise the boiling point by 2.0 degrees Celsius?
What is 115 g
500
How much heat is required to raise the temperature of 200.0 g of mercury by 20 degrees Celsius? The specific heat of mercury of 0.14.
What is 560 J
500
What is the difference between heat and enthalpy?
What is enthalpy is at constant pressure - heat is not