Redox Reactions Flashcards
(14 cards)
atoms in their elemental form have an oxidation state = to
zero
for monatomic ions, the oxidation state = to
Ex: NaCl
the charge on the ion
Increasing the oxidation state (i.e. from 0 to +1) means that atom is being _______
oxidized
Decreasing the oxidation state (i.e. from +1 to 0) means that atom is being _____
reduced
Assigning oxidation states by valence electrons
count the number of electrons the atoms has in the molecule and subtract that from the number of valence electrons it has in its ground state
for electrons in a bond, assign the electrons to the more _______ atom
electronegative
oxidation half reaction
loss of electrons = oxidation
reduction half reaction
gain of electrons = reduction
atom / molecule that supplies the electrons for oxidation; that atom that is oxidized
reducing agent
atom / molecule that receives the electrons during reduction; the atom/molecule that is reduced
oxidizing agent
one substance that is both oxidized and reduced in the same reaction
(i.e. Decomposition of Hydrogen peroxide)
disproportionation reaction
oxidation state of oxygen in water
-2
oxidation state of O2
0
oxidation state of Oxygen in hydrogen peroxide
-1
