IB Chemistry SL Reactivity 2.1.1 Chemical Equations

Practise turning named reactants and products into a complete chemical equation. Write correct formulas first, conserve every element and total charge with coefficients, then add…

Syllabus
First assessment 2025
Objective
2.1.1
Level
SL

Exam points

  • deduce correct reactant and product formulas before adjusting any coefficients
  • balance atoms and charge with coefficients without altering chemical subscripts
  • include solid, liquid, gas and aqueous state symbols when the question requires them

2.1.1—Chemical equations question 1

[Maximum number: 1]

Iron may be extracted from iron (II) sulfide, FeS.

The first step in the extraction of iron from iron (II) sulfide is to roast it in air to form iron (III) oxide and sulfur dioxide.

Write the equation for this reaction.

All question bank results loaded