Electrolyte & Battery

A solute whose water solution conducts electricity is called a(n)

• nonconductor

• electrolyte

• nonelectrolyte

• aqueous solution

If an electrical current can run through a solution, it is said to contain

• electrons

• nonelectrolytes

• electricity

• electrolytes

Which of the following is an electrolyte?

• sodium chloride

• sugar

• water

• helium

In electrolytic cell that uses aqueous copper(II) sulfate as electrolyte and copper plates as electrodes, what is the product at the anode?

• Oxygen gas and water

• Copper metal

• Copper(II) ions

• Hydrogen gas

In an electrolysis, anions get discharged by ________ electrons at the ___________

• gaining, cathode

• losing, anode

• gaining, anode

• losing, cathode

Positive ions (cations) move towards the cathode (-) where they will discharge by....

• Breaking apart

• Losing electrons

• Clumping together.

• Gaining electrons

Tags

NGSS.HS-PS2-5

What is the half-equation for the discharge of hydroxide ions?

• 2O^2- --> O₂ + 4e^-

• OH^- --> OH + e

• 4OH^- --> 2H₂O + O₂ + 4e^-

• 2H₂O + O₂ + 4e^- --> 4OH^-

Tags

NGSS.HS-PS1-7

Electroplating is an industrial process where objects are coated by a thin layer of a nonreactive metal by electrolysis. What should be used as the cathode in this process?

• Graphite electrode

• The electroplating metal

• The object to be electroplated

• Magnesium ribbon

Tags

NGSS.HS-PS2-5

If the fork is to be electroplated with silver metal, what electrolyte should be used?

• Molten silver chloride

• Aqueous silver nitrate

• Sodium chloride solution

• Copper(II) sulphate solution

Tags

NGSS.HS-PS2-5

Reduction happens at the 

• anode
• cathode
• salt bridge
• voltmeter