Chapter 4: Reactions in Aqueous Solutions Flashcards
Activity Series
A summary of the results of many possible displacement reactions
Aqueous solution
A solution in which the solvent is water
Bronsted acid
a substance that donates a proton
Bronsted base
a substance that accepts a proton
combination reaction
a reaction in which 2+ substances combine to form a single product
concentration of a solution
Amount of solute present in a given quantity of solvent or solution
combustion reaction
A reaction in which a substance reacts with Oxygen, usually with the release to heat and light to produce a flame
decomposition reaction
The breakdown of a compound into two or more components
dilution
A procedure for preparing a less concentrated solution from a more concentrated solution
diprotic acid
Each unit of the acid yields two hydrogen ions upon ionization
displacement reaction
an atom or an ion in a compound is replaced by an atom of another element
disproportionation reaction
a reaction in which an element in one oxidation state is both oxidized and reduced
electrolyte
a substance that when dissolved in water results in a solution that can conduct electricity
equivalence point
the point at which the acid has completely reacted with or been neutralized by the base
gravimetric analysis
an experimental procedure that involves the measurement of mass
half-reaction
explicitly shows the electrons involved in a redox reaction
hydration
a process in which an ion or a molecule is surrounded by water molecules arranged in a specific manner
hydronium ion
the hydrated proton H3O+, shorthand = H+
indicator
substance that has a distinctly different color in acidic and basic solutions
ionic equation
shows dissolved species as free ions
metathesis reaction
A reaction that involves the exchange of parts between two compounds
molar concentration
same as molarity
molarity (M)
of moles of solute per liter of solution
molecular equation
equation in which the formula of the compound is written as though all species existed as molecules or whole units
monoprotic acid
each unit of acid yields one H+ ion upon ionization
net ionic equation
an equation that indicates only the ionic species that actually take part in the reaction
neutralization reaction
a reaction between an acid and a base
nonelectrolyte
a substance that when dissolved in H2O, gives a solution that is not electrically conducting
oxidation number
the number of charges an atom would have in a molecule if electrons were transferred completely in the direction indicated by the difference in electronegativity
oxidation reaction
the half-reaction that involves the loss of electrons
oxidation-reduction reaction
a reaction that involves the transfer of electrons or the change in the oxidation state of reactants
oxidation state
same as oxidation number
oxidizing agent
a substance that can accept electrons from another substance or increase the oxidation numbers in another substance
precipitate
an insoluble solid that separates from the solution
precipitation reaction
a reaction that results in the formation of a precipitate
quantitative analysis
the determination of the types of ions present in a solution
redox reaction
a reaction in which there is either a transfer of electrons or a change in the oxidation numbers of the substances taking part in the reaction
reducing agent
a substance that can donate electrons to another substance or decrease the oxidation numbers in another substance
reduction reaction
the half-reaction that involves the gain of electrons
reversible reaction
a reaction that can occur in both directions
salt
an ionic compound made up of a cation other than H+ and an anion other than OH- or O2-
solubility
the max amount of solute that can be dissolved in a given quantity of solvent at a specific temperature
solute
the substance present in smaller amount in a solution
solution
a homogenous mix of 2+ substances
solvent
the substance present in larger quantity of a solution
spectator ion
ions that arent involved in the overall reaction
standard solution
a solution of accurately known concentration
titration
the gradual addition of standard solution to a solution of unknown concentration until the chem reaction between the two is complete
triprotic acid
each unit of the acid yields three protons upon ionization
M=n/V
equation for calculating molarity
moles of solute/liters of solution
molarity
Mi + Vi=MfVf
dilution of a solution