Electrolysis

___________ electrode is an inert electrode.

• Copper

• Iron

• Carbon

• Zinc

What is the name of the negative electrode?

• cathode

• anode

Tags

NGSS.HS-PS2-5

What is the name of a negatively charged electrode?

• cathode

• anode

• cation

• anion

Tags

NGSS.HS-PS2-5

What is the name of a positively charged electrode?

• cathode

• anode

• cation

• anion

Tags

NGSS.HS-PS2-5

What state must the ionic compound be in to be electrolysed?

• aqueous only

• solid only

• solid or aqueous only

• molten or aqueous only

What particle carries the charge in the electrolyte?

• electron

• proton

• ion

• atom

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^- 

Tags

NGSS.HS-PS3-5

Choose the half-equation that shows the discharge of aluminium ion.

• Al³⁺ - 3e^- --> Al

• Al²⁺ + 3e^- --> Al

• Al³⁺ + 3e^- --> Al

• Al³⁺ --> Al + 3e^-

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 positively charged ion?

• positron

• proton

• cation

• anion