CourseCourseConceptConceptDocsDocuments

IB Chemistry SL 3.2.3 Periodic Trends in Redox Questions

Use real SL exam questions to order metal reactivity, interpret displacement observations and link extraction to redox ease.

Syllabus
First assessment 2025
Course
Chemistry SL
Level
SL

Exam points

  • Deduce a metal activity series from displacement results, reaction observations or supplied reduction tendencies.
  • Predict or interpret a metal or halogen displacement reaction and identify the observation confirming relative ease of oxidation or reduction.
  • Explain why metal extraction uses carbon reduction or electrolysis according to the reducibility of the metal ion and ease of metal oxidation.

Learn this topic

Study 3.2.3—Periodic trends in redox conceptsOpen the corresponding Concept lesson for explanations, examples and exam connections.

IB Chemistry SL 3.2.3 Periodic Trends in Redox Questions question 1

[Maximum number: 2]

Consider the following spontaneous reactions.

Fe( s)+Ni2+(aq)→Fe2+(aq)+Ni( s)Zn( s)+Fe2+(aq)→Zn2+(aq)+Fe( s)Ni( s)+Pb2+(aq)→Ni2+(aq)+Pb( s)\begin{aligned} & \mathrm{Fe}(\mathrm{~s})+\mathrm{Ni}^{2+}(\mathrm{aq}) \rightarrow \mathrm{Fe}^{2+}(\mathrm{aq})+\mathrm{Ni}(\mathrm{~s}) \\ & \mathrm{Zn}(\mathrm{~s})+\mathrm{Fe}^{2+}(\mathrm{aq}) \rightarrow \mathrm{Zn}^{2+}(\mathrm{aq})+\mathrm{Fe}(\mathrm{~s}) \\ & \mathrm{Ni}(\mathrm{~s})+\mathrm{Pb}^{2+}(\mathrm{aq}) \rightarrow \mathrm{Ni}^{2+}(\mathrm{aq})+\mathrm{Pb}(\mathrm{~s}) \end{aligned}

Deduce the order of increasing reactivity of the metals based on the reactions above.

All question bank results loaded