Q2 F5 CHE 28/5

CHEMICAL CELL怎样分辨anode?

• ECS位子比较高

• ECS位子比较低

• battery长的

• battery短的

怎样分辨reducing agent?

• 捐electron

• 收electron

ELECTROLYRTIC CELL 的anode是

• negative terminal

• positive terminal

Chemical cell

• Chemical energy to electrical energy

• electrical energy to Chemical energy

___ OH- -> O2+ 2H2O + 4e-

• 2

• 3

• 4

• 5

Cu2+ + 2e- -> Cu

• blue solution become paler

• blue solution is formed.

Cu -> Cu2+ + 2e-

• blue solution become paler

• blue solution does not change

• blue solution is formed.

pairs of metal in electrolytic cell is _____.

• same

• different