chem test 2
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if the compound is a metal cation combined with a non-metal anion
or either combination with a polyatomic ion
if a compound is a combination of non-metals
What is SO2?
What is CaCl2?
What is (NH4)2SO4?
the energy required to break an ion apart; always positive (endothermic)
the enrgy released when a substance is dissolved into a solution; always negative (exothermic)
rxn in which the solution becomes warmer because the process gives off energy
rxn in which the solution becomes cooler because the process is taking in energy
the natural tendency of things to become mixed
when rxn's are more disordered
when rxns have less disorder
As the temperature of gas solutes decreases, the solubility of them in solvents
list the four colligative Properties
1. Freezing Point Depression
2. Boiling Point Elevation
3. Vapor-pressure Reduction
4. Osmotic Pressure
Colligative Properties depend on the:
quantity or concentration of the solute particles
Colligative properties does not depend on:
the kind or identity of the solute particles
What influences reaction rate?
the 3 Arrhenius factors
1. The fraction of molecules possessing an energy of Ea or greater
2. The number of collisions occurring per second
3. THe fraction of collisions that have the proper orientation
Where is the + on NH4?
on the N
chem test 2
chem exam 2