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IB Chemistry HL 3.1.6 Strong Vs Weak Acids Bases Questions

Use real HL exam questions to distinguish strong and weak acids or bases by ionization, pH, conductivity and neutralization evidence.

Syllabus
First assessment 2025
Course
Chemistry HL
Level
HL

Exam points

  • Explain strong and weak acid differences through complete or partial ionization and the resulting hydronium concentration.
  • Compare equal-concentration acids using pH, conductivity and neutralization evidence.
  • Choose or explain an instrumental method for distinguishing acids by ion concentration or conductivity and separate strength from concentration.

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Study 3.1.6—Strong vs. weak acids/bases conceptsOpen the corresponding Concept lesson for explanations, examples and exam connections.

IB Chemistry HL 3.1.6 Strong Vs Weak Acids Bases Questions question 1

[Maximum number: 1]

When nitrogen gas and hydrogen gas are allowed to react in a closed container the following equilibrium is established.

N2( g)+3H2( g)⇌2NH3( g)ΔH=−92.6 kJ\mathrm{N}_{2}(\mathrm{~g})+3 \mathrm{H}_{2}(\mathrm{~g}) \rightleftharpoons 2 \mathrm{NH}_{3}(\mathrm{~g}) \quad \Delta H=-92.6 \mathrm{~kJ}

Define the term weak base according to the Brønsted-Lowry theory.

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