Chapter 3 : Electrochemistry (Part 2)

What reaction occurs at the anode?

Ag⁺/Ag = 0.80V

Ni²⁺/Ni = -0.25V

• Ag⁺ + e^- →Ag

• Ag → Ag⁺ + e^-

• Ni²⁺ + 2e^- → Ni

• Ni → Ni²⁺ + 2e^-

Tags

NGSS.HS-PS1-2

Al³⁺(aq) + 3e^-→Al(s) E° = -1.66 V

Ag⁺(aq) + e^-→Ag(s) E° = +0.80 V

According to the standard reduction potentials given above, what is the standard cell potential for the reaction represented below?

3Ag⁺(aq) + Al(s) →3Ag(s) + Al³⁺(aq)

• -1.74 V

• -0.86 V

• +1.74 V

• +2.46 V

Tags

NGSS.HS-PS3-1

Galvanic cells convert

• mechanical energy in to electrical energy

• potential energy in to electrical energy

• electrical energy in to chemical energy

• chemical energy in to electrical energy

The electrolysis of molten sodium chloride produces

• hydrochloric acid
• sodium metal and chlorine gas
• chlorine gas and aqueous sodium hydroxide
• glucose

The electrolysis of water produces

• acids and bases
• hydrogen gas only
• hydrogen gas and oxygen gas
• oxygen gas only

The covering of a thin layer of metal is

• electrowinning
• electrorefining
• electroplating
• electromachining

The cell potential of a spontaneous reaction is

• positive
• negative

What is electrolysis?

• breaking down of a compound using a current
• making a compound using a current

Tags

NGSS.HS-PS3-5

What kind of Electrical Current does Electroysis require?

• Direct
• Indirect
• Anternative
• A alternating

What is the name given to the solution that is being electrolysed?

• Salt solution
• Electric solution
• Mineral solution
• Electrolyte

Tags

NGSS.HS-PS1-5