Redox Reactions Flashcards
X + YZ —> XZ + Y What type of reactions is the above equation? Is this a redox reaction?
Single displacement reactions. Yes, this is a redox reaction. In single-displacment reactions, one of the substances is an element; therefore all single-displacement reactions ARE redox processes.
When the energy absorbed is heat, the reaction is called a ______________.
thermal decomposition
When one reactant has a greater ______ for electrons than another, there is a net ______ of electrons, and a _____________ takes place.
attraction; movement; redox reaction
What type of process does a compound absorb electrical energy and decomposes into its elements?
Electrolytic Decomposition
Name the redox reaction when one substance forms two.
Decomposition
True or False? In combination redox reactions, one element displaces the ion of another from solution.
False. It should be displacement redox reaction.
a) Name the redox reaction when two substances form one. 3Mg(s) + N2(g) —-> Mg3N2(s) O.N. 0 0 +2 -3 b) Which is the reducing agent? c) Which is the oxidizing agent?
a) Combination b) Mg is the reducing agent; c) N2 is the oxidizing agent
What does the mnemonic LEO the lion says GER?
LEO: Loss of Electrons is Oxidation; GER: Gaining Electrons is Reduction
AB + CD —> AC + BD What is the type of reaction the equation above? Is this a redox reaction?
Double Displacement (metathesis) reaction. This is NOT a redox reaction. In double-displacement (metathesis) reactions, such as precipitation and acid-base reaction, atoms (or ions) of two *compounds* exchange places.
Rank the reactivity of the following halogens Group 7A(17):
Br2
Cl2
F2
I2
Reactivity of the elements decreases down Group 7A(17). Therefore,
F2 > Cl2 > Br2 > I2
In _________ redox reactions, compounds break down by ________ of heat or electricity into elements or into a compound and an element.
decomposition; absorption
What type of bond do a metal and a non-metal form?
Ionic
A halogen higher in the group is a ___________ oxidizing agent than one lower down.
Stronger
What type of bond do two non-metals form?
Covalent
What is the O.N. for O in peroxides?
-1
