Solutions 2
Thermochemistry
Thermochemistry 2
Acids & Bases
Grab Bag
100
When the liquid is the greater amount in a solution
What is solvent?
100
Thermochemistry is the study of energy changes that occur during ___________ ___________ and changes in ________.
What is chemical reactions and state?
100
1.86 degrees Celscius; .512 degrees Celscius
What is the molal freezing point constant and the molal boiling point constant?
100
Arrhenius theory and Bronsted-Lowry theory
What are the names of the 2 theories that are related to acid-base chemistry?
100
HBr
Hydrobronic Acid
200
How a solution's strength is expressed
What is molarity?
200
The letter q.
How heat is represented in thermochemistry
200
How heat flows through a system
Heat always flows from a warmer object to a cooler object.
200
A conjugate base ion forms
When an acid donates a hydrogen ion.
200
What is the gram formula mass of this compound: CaF2
78 g/mole 40+19(2)= 78
300
Freezing point depression's inverse
What is boiling point elevation?
300
An exothermic process
When a system loses heat as the surroundings heat up.
300
When heat is absorbed by a system
Heat is released by the surroundings.
300
A strong acid
What is the name of an acid that ionizes completely in dilute solutions?
300
Balance this equation: Al + Pb(NO3)2 à Al(NO3)3 + Pb *2Al + 3Pb(NO3)2 à 2Al(NO3)3 + 3Pb
2Al + 3Pb(NO3)2 à 2Al(NO3)3 + 3Pb
400
Stirring, temperature, and this affect solubility
Surface area
400
The joule and the calorie
What two units are heat measured in?
400
An equation that shows the enthalpy change.
What is a thermochemical equation?
400
It is detected using an indicator
How is the equivalence point in a titration detected?
400
N2 + 3H2 --> 2NH3: How many moles of hydrogen are needed to completely react with two moles of nitrogen?
6 moles of nitrogen 3H2 * 2N2/1H2 = 6 moles
500
Surface area
Stirring, temperature, and _________ _______affect solubility.
500
The law of conservation of mass is important in these types of processes:
In endothermic and exothermic processes
500
Entropy
What measures the chemical potential of a substance?
500
Salt and water are formed
What are the products of this reaction: acid + base
500
N2 + 3H2 -->2NH3: What volume is necessary to react with 5 liters of nitrogen to produce ammonia?
15 L H2 5L N2 * 3H2/1LN2 = 15 L H2
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