Hess's Law Practice Problems

Hess's Law practice with 15 problems in which students combine given reactions and their ΔH° values to find the heat of reaction at 298 K for each target equation.
File type
Microsoft Word

Updated Oct 19, 2026

Subject
Chemistry, Science
Topic
Chemistry Practice, Hess's Law
Resource types
Worksheets

From the author

About this resource

This resource includes:

- 15 problems covering Hess's Law

- Students will be given equation: ΔHo/kJ values to determine the heat of reaction (kJ) at 298 K for the reactions listed.


Answers are included.

In the classroom

Teaching tips & learning objectives

Learning objectives

  • Apply Hess's Law to combine reactions and calculate an overall heat of reaction

Skills covered

  • Manipulating equations — arranging given reactions so they add up to the target equation

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