Electrolysis

In an aqueous solution of copper chloride, which substance is produced at the positive electrode

• copper

• chlorine

• oxygen

• ^chloride 

Which statement correctly describes the 2 electrodes?

• The anode is negative and the cathode is positive

• The anode and cathode are both positive

• The anode is positive and the cathode is negative

• The anode and cathode are both negative.

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

What happens at the positive electrode?

• Positive non-metal ions are attracted

• Positive metal ions are attracted

• Negative non-metal ions are attracted

• Negative metal ions are attracted

Tags

NGSS.HS-PS2-5

What is the equation to show what happens to Cl ions at the anode.

• Cl^- --> Cl + e-   

• 2Cl^- --> Cl₂ + 2e-   

• Cl₂ + 2e-   2Cl^- 

• Cl₂ + 2e-  _-->  2Cl^- 

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^-

What is the name of a negatively charged ion?

• negatron

• electron

• cation

• anion

Oxidation is loss of electron. Where does oxidation take place during electrolysis.

• At anode

• In the electrolyte

• At the circuit

• At cathode

What is electrolysis?

• breaking down of a compound using a current

• making a compound using a current

What kind of Electrical Current does Electroysis require?

• Direct

• Indirect

• Anternative

• A alternating

When NaCl solution is electrolysed what has forms at the anode?

• Hydrogen

• Oxygen

• Chlorine

• Sodium