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IB Chemistry HL 3.2.4 Acids with Reactive Metals Questions

Use real HL exam questions to predict metal–acid reactions, write ionic equations and identify hydrogen observations.

Syllabus
First assessment 2025
Course
Chemistry HL
Level
HL

Exam points

  • Write the ionic equation for a reactive metal with a dilute acid or ammonium ion, showing hydrogen gas formation and correct charges and state symbols.
  • Use the metal reactivity and acid identity to predict whether reaction occurs and describe the observable gas evolution or disappearance of the metal.
  • Identify the products and the acid/metal roles in reactive-metal reactions, including hydrogen or ammonia where the stated reactants require it.

Learn this topic

Study 3.2.4—Acids with reactive metals conceptsOpen the corresponding Concept lesson for explanations, examples and exam connections.

IB Chemistry HL 3.2.4 Acids with Reactive Metals Questions question 1

[Maximum number: 1]

An aqueous solution X reacts with a solid Y, to produce a flammable gas. Which of the following suggestions could substances X and Y be?

X

Y

nitric acid, HNO3\mathrm{HNO}_{3}

calcium carbonate, CaCO3\mathrm{CaCO}_{3}

sulfuric acid, H2SO4\mathrm{H}_{2} \mathrm{SO}_{4}

zinc, Zn

hydrochloric acid, HCl

copper, Cu

sodium hydroxide solution, NaOH

aluminum oxide, Al2O3\mathrm{Al}_{2} \mathrm{O}_{3}

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