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16 Cards in this Set

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Electrolyte
a subsdtance such as NaCl whose aqueous solutions contain ions
Nonelectrolyte
a substance such as C12H22O11 that does not form ions in solution
water is a...
very effective solvent for ionic compounds
when a molecular compound dissolves in water what happens?
the solution usually consists of intact molecules dispersed throughout the solution.
what does this result in?
most molecular compounds are nonelectrolytes.
Strong electrolytes
are those solutes that exist in solutions completely or nearly completely as ions.
weak electrolytes
are those solutes that exist in solution mostly in the form of molecules with only a small fraction in the form of ions.
what does a double arrow represent
the ionization of weak electrolytes
what does a single arrow represent
the ionization of strong electolytes
HCl(aq)-->H+(aq)+Cl-(aq)
what does the single arrow indicate
that the H+ and Cl- ions have no tendency to recombine in water to form HCl molecules
soluble ionic compounds are what?
strong electrolytes
How do we identify ionic compounds?
as being composed of metals and nonmetals
How else do we identify ionic compounds?
compounds containing the ammonium ion NH4+ such as NH4Brand (NH4)2CO3
when do precipitation reactions occur
when certain pairs of oppositely charged ions attract each other so strongly that they form an insoluble ionic solid
precipitation reaction
reactions that result in the formation of an insoluble product
precipitate
is an insoluble solid formed by a reaction in solution