7 - Electrochemistry Flashcards
Oxidation=
Redox=
Oxidation= atom that loses electrons is oxidized.
Redox= the atom that gains electrons is reduced.
Oxidation States=
- elemental form=
- Fluorine =
- hydrogen =
- Oxygen =
Oxidation States= are the possible charge values that an atom may hold within a molecule.
- elemental form= 0
- Fluorine = -1
- hydrogen = +1
- Oxygen = -2
Group 1 elements (alkali metals) =
Group 2 elements (alkaline earth metals) =
Group 15 elements (nitrogen family) =
Group 16 elements (oxygen family) =
Group 17 elements (halogens) =
Group 1 elements (alkali metals) = +1
Group 2 elements (alkaline earth metals) = +2
Group 15 elements (nitrogen family) = -3
Group 16 elements (oxygen family) = -2
Group 17 elements (halogens) = -1
Anode=
Cathode=
*RED ____ : AN _____
Galvanic Cell=
Anode= -
Cathode= +
*RED CAT : AN OX
Galvanic Cell= turns chemical energy into electrical energy.
Concentration Cell=
*Never at standard conditions so the nernst equation is required to solve for the ________
Electrolytic cell=
*negative _____
Concentration Cell= is a limited form of a galvanic cell with a reduction half reaction taking place in one half cell and the exact reverse of that half reaction taking place in the other half cell.
*Never at standard conditions so the nernst equation is required to solve for the cell potential.
Electrolytic cell= if we hook up a power source across the resistance of a galvanic cell, and force the cell to run backwards, we have created another type of cell the electrolytic cell.
*negative emf
