Redox and Nuclear decay Flashcards
What is oxidation
Loss of electrons, Gain of oxygen and loss of hydrogen
What is reduction
Gain of electrons, loss of oxygen and gain of hydrogen
What is the oxidation state of any element in its standard state?
0
What is the oxidation state of group 1 metals
+1
What is the oxidation state of group 2 metals
+2
What is the oxidation state of Fluorine?
-1
What is the oxidation state of oxygen?
-2
The more positive the reduction potential of a reaction
the easier it is to reduce the reactant
The more positive the oxidation potential of a reaction
the easier it is to oxidize the product
What are reducing agents
They are compounds that cause others to gain electrons
They themselves become oxidized because they lose electrons to have other compounds gain electrons
They are compounds with very positive oxidation potential
What are oxidizing agents
They are compounds hat cause other to lose electrons
They themselves become reduced because they gain electrons to have other compounds lose electrons
They are compounds with very positive reduction potential
What is the equation of free energy
Delta G = -nFdeltaE
What happens if E in the free energy equation is less than zero
Delta G is positive and therefore the reaction is not spontaneous
What happens if E in the free energy equation is greater than zero
Delta G is negative and therefore the reaction is spontaneous
What is the equation for time-based electroplating calculation
I = nF/t
time should be in seconds
Galvanic vs Electrolytic cell
Galvanic = no external power source, spontaneous (positive E), electron flows up (anode to cathode)
Electrolytic = has an external power source, non-spontaneous (negative E), electron flows down (anode to cathode)
Cathode vs Anode
Cathode is positive and anode is negative.
An Ox Red Cat = Anode is the place for oxidation while cathode is the place for reduction
Where are the anode and cathode on a galvanic cell?
Anode = bottom
Cathode = top
Electron goes towards the cathode
The cathode is where…
Reduction occurs
Cation flow towards
Plating occurs
The anode is where..
Oxidation occurs
Anion flow towards
Pitting occurs
What is alpha decay
Loss of mass number of 4 and atomic number of 2
What is beta emission
Gain of atomic number (Z) of 1
What is beta decay
Loss of atomic number (Z) of 1
What is a positron emission
Loss of atomic number (Z) of 1
