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IB Chemistry HL 3.2.7 Secondary Rechargeable Cells Questions

Use real HL exam questions to analyse lead-acid, NiCad and lithium-ion cells, including discharge/recharge equations and comparisons.

Syllabus
First assessment 2025
Course
Chemistry HL
Level
HL

Exam points

  • Identify the electrode and electrolyte materials in lead-acid, NiCad or lithium-ion secondary cells during discharge, and assign anode and cathode roles.
  • Write or deduce the anode and cathode half-equations or overall equation for a secondary cell during discharge and recharge, including electron transfer and ion movement.
  • Compare secondary cells with primary cells and fuel cells by reversibility, materials, energy operation and how the cell is reused.

IB Chemistry HL 3.2.7 Secondary Rechargeable Cells Questions question 1

[Maximum number: 1]

As well as being burnt, methanol can also be used to provide electricity through a fuel cell. A schematic diagram of such a fuel cell, that depends on the transfer of hydrogen ions between the electrodes, is shown below.

Figure for Question IB Chemistry HL 3.2.7 Secondary Rechargeable Cells Questions question 1 — IB Chemistry HL

Even though fuel cells, primary cells and rechargeable cells have similar fundamental characteristics, there are important differences between them.

Outline the difference between primary and rechargeable cells.

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