16A.2

Question 1

What is the electrochemical cell

Answer 1

a device for producing an electric current from chemical reactions. it is constructed of two half-cells

Question 2

in the salt bridge it is the flow of

Answer 2

ions and not electrons

Question 3

which half cell would be the negative electrode in the electrochemical cell

Answer 3

the one with the more negative E

Question 4

what does the line (ا) show in cell diagrams

Answer 4

a change in phase

Question 5

if the reduced and oxidized form are the same phase how do we represent that in cell diagrams

Answer 5

,

Question 6

how is the flow of electrons in an electrochemical cells

Answer 6

the electrons flow from the negative electrode to then positive electrode through the external circuit

Question 7

what is the cell notation of a Pt(s) ions of a solution

Answer 7

Pt(s) ا ion^+2(s) ا ion^+3(aq)

Question 8

what are the rules of cell notations for an electrochemical cell - cell diagram

Answer 8

1. the two reduced forms of the species are shown outside
2. the positive electrode is shown on the right-hand side of the cell diagram
3. the standard hydrogen electrode is always written on the left hand-side

Question 9

in cell diagram (: :) represents

Answer 9

salt-bridge

Question 10

what is the E cell

Answer 10

the difference between to E at the two half cell in the electrochemical cell

Question 11

how to calculate E cell

Answer 11

E cell = E(more negative) - E(more negative)