EC potato clock

Question 1

2nd metal

Answer 1

Copper
-voltage=.34
-loses electrons to H+1 in electrolyte to produce hydrogen gas
^becomes positive terminal

Question 2

potential difference

Answer 2

-1.1 volts- for 1 potato cell

^more cells-add voltage

Question 3

Electrolyte

Answer 3

• Potato-“juice”- aqueous solution (Na,K,Cl,H)+1

- Lemon- Citric Acid-H+1

Question 4

1st metal

Answer 4

Zinc
-voltage=-.76
-more reactive than copper b/c zinc voltage is lower
-dissolves in electrolyte so zinc loses electrons
^becomes neg terminal b/c electrons build up on the zinc electrode