redox

Question 1

oxidation number

Answer 1

in covalently bonded atoms, it is the charge the atom would possess if the shared electrons were completely transferred to the more electronegative atom

Question 2

electronegativity

Answer 2

measure of an atom’s ability to attract the shared paired of electrons in a covalent bond towards itself

Question 3

top most electronegative atoms

Answer 3

F>O>Cl>N

C≈H

Question 4

acidic medium constructing eqn to balance atoms and charges

Answer 4

1. skeletal ionic half eqns for 2 reactants ( [O] and [R] )
2. balance number of atoms
   3a. Balance O by adding H2O on the other side
   3b. Balance hydrogen (from all compounds) by adding H+ on the ither side
3. Balance charges by adding e- for each half eqn
4. combine eqn by equating e-

Question 5

alkaline and neutral medium constructing eqn to balance atoms and charges

Answer 5

1. skeletal ionic half eqns for 2 reactants ( [O] and [R] )
2. balance number of atoms
   3a. Balance O by adding H2O on the other side
   3b. Balance hydrogen (from all compounds) by adding H+ on the ither side
   * 3c. neutralise all H+ with OH- on both sides
3. Balance charges by adding e- for each half eqn
4. combine eqn by equating e-