redox

Question 1

what is a reducing agent

Answer 1

the thing that oxidizes

Question 2

what is the oxidizing agent

Answer 2

the thing that reduced

Question 3

the process of oxidation involves

Answer 3

loss of electrons (LEO)

Question 4

the process of reduction involves

Answer 4

gain of electrons (GER)

Question 5

what happens to the voltage if pure water is added to half cells

Answer 5

the voltage would decrease

Question 6

a salt bridge does what

Answer 6

provides a path for ions to migrate between two half cells

Question 7

what are the steps in balancing redox

Answer 7

split equation, balance major, balance O, balance H, balance charges, make electrons equal and add two half equations together

Question 8

combination of reduced half cell and oxidation half cell is called

Answer 8

electrochemical/ galvanic cell

Question 9

anode are where

Answer 9

oxidation occurs

Question 10

cathode are where

Answer 10

reduction occurs

Question 11

what is salt bridges function

Answer 11

balance charges

Question 12

what is most common salt bridge

Answer 12

KNO3

Question 13

operatiinf electrochemical cells are

Answer 13

not at equilibrium

Question 14

what is a electrolysis cell

Answer 14

an apparatus in which electrolysis can occur

Question 15

what is electroplating

Answer 15

a metel to be reduced or plated at a cathode

Question 16

what prevents rusting

Answer 16

paint/oil/grease
keeping metal cold
catholic protection

Question 17

initial cell voltage at 25 C is

Answer 17

+1.10V

Question 18

electrolyte used in alkaline battery is

Answer 18

KOH

Question 19

the electrolyte in a automobile battery is

Answer 19

H2SO4

Question 20

to plate a nickel coin with copper the

Answer 20

nickel coin must be at cathode

Question 21

anode used in commercial production of AL is

Answer 21

Carbon

Question 22

what is an example of a electrolytic cell

Answer 22

electrowinning, electroplating and charging a car battery

Question 23

what involves a nonspon redox reaction

Answer 23

electroplating

Question 24

saiting roads causes more corrosion of cars because

Answer 24

it provides a electrolyte

Question 25

a electrolytic cell must have what to operate

Answer 25

a power supply

Question 26

why does painting prevent corrosion

Answer 26

it prevents h20 and o2 from contracting the iron

Question 27

what does catholic protection work

Answer 27

because if you add some Zn it forces the metal to be the cathode and cannot oxidize

Question 28

how to electrons move through the cell

Answer 28

they move from the anode to the cathode

Question 29

what is cell potential once equilibrium is achieved

Answer 29

+0.00V

Question 30

if a solution goes from 0 to +5 it is

Answer 30

being oxidized

Question 31

if a solution goes from +3 to -1 it’s being

Answer 31

reduced