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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.
Grades
Grades 8–12, Middle School, High School
File type
Microsoft Word

Updated Oct 19, 2026

Subject
Science, Chemistry
Topic
chemistry practice, Hess's Law
Resource types
Worksheets & Printables, Worksheets

About this resource

What's inside 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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