ELECTROLYSIS (MOLTEN & AQUEOUS))

State one example of the process of electrolysis of molten substances.

• Electrolysis of molten sodium chloride (NaCl)

• Electrolysis of molten water

• Electrolysis of molten magnesium sulfate (MgSO4)

• Electrolysis of molten carbon dioxide (CO2)

STATE THE REACTION OCCUR AT ANODE & CATHODE

• Anode: Reduction, Cathode: Oxidation
• Anode: Combustion, Cathode: Evaporation
• Anode: Neutralization, Cathode: Ionization
• Anode: Oxidation, Cathode: Reduction

THE FOLLOWING IS AN ION THAT MAY BE ATTRACTED TO THE CATHODE EXCEPT......

• COPPER(II) ION

• OXYGEN ION

• MAGNESIUM ION

• ZINC ION

state the type of factor that affect this electrolysis of aqueous solution

• value of E0

• concentrations of electrolytes

• type of electrodes

STATE THE IONS THAT DOES NOT PRESENT IN COPPER (II) NITRATE SOLUTION

• HYDROGEN ION

• NITRATE ION

• OXIDE ION

• COPPER (II) ION

STATE THE IONS THAT WILL BE SELECTED IN ANODE AND CATHODE?

• ANODE: HYDROXIDE ION

  CATHODE: SODIUM ION

• ANODE: CHLORIDE ION

  CATHODE: SODIUM ION

• ANODE: HYDROXIDE ION

  CATHODE: HYDROGEN ION

GIVEN THAT X (ANODE) AND Y (CATHODE), STATE THE PRODUCT FORMED AT X?

• HYDROGEN GAS

• OXYGEN GAS

• MAGNESIUM METAL

STATE THE OBSERVATION THAT OCCUR AT ELECTRODES THAT UNDERGOES REDUCTION?

• BROWN GAS RELEASED

• GREY SOLID DEPOSITED

WHY CHLORINE GAS RELEASE AT ANODE

• CONCENTRATION OF Cl- IS HIGHER THAN OH-

• VALUE OF EO Cl- IS MORE NEGATIVE THAN OH-

• VALUE OF EO Cl- IS MORE POSITIVE THAN OH-

• CONCENTRATION OF Cl- IS LOWER THAN OH-

electrolyte = 2MOLDM-3 COPPER (II) SULFHATE SOLUTION

STATE THE OBSERVATION AT ANODE & CATHODE?

• ANODE: COLOURLESS BUBBLE GAS RELEASE

  CATHODE: BROWN SOLID DEPOSITED

• ANODE: BROWN BUBBLE GAS RELEASE

  CATHODE: BROWN SOLID DEPOSITED

• NODE: BROWN BUBBLE GAS RELEASE

  CATHODE: COLOURLESS BUBBLE GAS RELEASE

• ANODE: COLOURLESS BUBBLE GAS RELEASE

  CATHODE: COLOURLESS BUBBLE GAS RELEASE