Unit 12 Quiz Flashcards
Acid
a chemical that increases the amount of hydrogen ions (H+) in an aqueous solution
taste sour
acid
how do acids change litmus paper?
Acids change litmus paper from blue to red
Reacts with metals to release hydrogen gas (H2)
Acid
Neutralization Reaction
acids and bases reacting to produce salt and water
Both acids and bases _____________________.
conduct electricity in aqueous solutions.
Base
a chemical that increases the amount of hydroxide (OH-) ions in an aqueous solution
What are the 2 kinds of bases?
Metal Hydroxides- ionic compounds that contain metal and hydroxide.
Molecular Bases- covalently bonded molecules that remove a hydrogen atom from water.
taste bitter
base
how do bases change litmus paper
bases change red litmus paper blue
feels slippery
base
Concentration
the amount of acid in a solution
Strength
the degree of ionization/dissociation
Properties of Strong Acids
-Ionize completely in water
-strong conductor
-high polarity
-low bond energy
Properties of Weak Acids
-Ionize partially in water
-weak conductors
-reverse reaction is favored, some acids will remain intact
Properties of Strong Bases
-dissociates completely in water.
-strong conductors
-tend to be hydroxides with group 1 or 2 metals (metal hydroxides)
-very soluble in water
Properties of Weak Bases
-Dissociate partially in water
-weak conductors
-tend to be molecular bases
pH greater than 7
base
pH less than 7
acid
feels like water
acid
Turns phenolphthalein pink
base
Turns phenolphthalein colorless
acid
H30 is greater than OH
solution is acidic
H30 is less than OH
solution is basic
pH
a way to express the concentration of hydronium ions
pOH
a way to express the concentration of hydroxide ions.
Higher molarity means that
more acid or base is disolved in a solution
For strong acids the [H3O+] is equal to…
the concentration of the acid
for strong bases the [OH-] is equal to ….
the concentration of the base times the number of OH-
Titration
a solution of known concentration (titrant) is used to find the unknown concentration of another solution (the analyte)
Equivilance point
a point where the tirant and analyte are present in chemically equivalent ammounts
End point
the point where the indicator changes color
