The Chemistry of Solutions
What kind of solute usually increases in solubility with increasoning temperature?
What is solid
Temperature at which the vapor pressure of a liquid is equal to normal atmospheric pressure
What is boiling point
If the temperature of an object starts to increase, the object is
What is gaining energy
Energy can be thought of as product in what type of reaction?
What is exothermic
A test done under standard conditions is referred to as the
What is control
True or False
For a gas solute dissolving in a liquid solvent, the solvent molecules must be attracted to the solute molecules enough to pull the solute molecules closer to one another.
What is true.
Following an established trend in the data even though no data are available for that region
What is extrapolation
The amount of energy needed to raise the temperature of 1 gram of water by 1 degree Celsius is
What is a calorie
A quantity that depends solely on the final destination and not on the way you get to the destination is
what is a state function
True or False
Rain is naturally acidic
What is True
What is a gas
Force per unit of area
What is pressure
What two quantities are needed in order for work to be calculated?
What is distance and force
Energy needed to start a chemical reaction
What is activation energy
What does the pH scale measure?
What is the acidity or basicity of a solution
The maximum amount of solute that can dissolve in a given amount of solvent is
What is saturated
A hot air balloon is filled with 1.89x102 liters of air at 21 degrees Celcius. If atmospheric pressure does not change, how hot must the air become in order to increase the volume to 4.5x102 liters?
What is 430 degrees Celcius
A 1.50kg iron object (c-0.4521J/goC) at 110.0oC releases 5,505 Joules of heat. What is it's new temperature?
What is Tfinal = 101.9oC
Use bond energies to determine the △H for the combustion of methane (CH4)
What is △H = 802kJ
A chemist runs a reaction at 25oC and determines that the reaction proceeds too quickly. He decides that the reaction needs to be slowed down by a factor of 4. At what temperature should he run the reaction?
What is 5oC
What is the molality of a solution made from 5.61 moles of KCl and 2.11 kg of water?
What is 2.66m
What is the mole fraction of each component of a gas mixture that contains sulfur trioxide at a pressure of 1.45 atm and sulfur dioxide at a pressure of 0.32 atm?
What is 0.18, 0.819
If a 50.0 object needs 1,145 Joules to increase its temperature by 10.0oC, what is its specific heat capacity?
What is 2.29J/goC
If a reaction has a △H of -120.0 kJ/mole and is spontaneous for all temperatures less than 200.0 K, what is its △S?
What is -0.6000kJ/mole x K
What is the acid ionization reaction for HNO3?
What is HNO3 (aq) → H+ (aq) + NO3- (aq)