Using Hess's Law to Calculate the Change in Enthalpy of a Reaction


Choose an answer and hit 'next'. You will receive your score and answers at the end.

question 1 of 3

Which of the following is TRUE of a thermochemical equation?

Create Your Account To Take This Quiz

As a member, you'll also get unlimited access to over 79,000 lessons in math, English, science, history, and more. Plus, get practice tests, quizzes, and personalized coaching to help you succeed.

Try it risk-free
Try it risk-free for 30 days. Cancel anytime
Already registered? Log in here for access

1. Which of the following is FALSE about Hess's Law?

2. When manipulating thermochemical equations, if I divide the coefficients of the chemical reaction of one step by 3, then what do I need to do to the enthalpy change value?

Create your account to access this entire worksheet
A Premium account gives you access to all lesson, practice exams, quizzes & worksheets
Access to all video lessons
Quizzes, practice exams & worksheets
Certificate of Completion
Access to instructors
Create an account to get started Create Account

About This Quiz & Worksheet

Use this multiple choice quiz and worksheet to practice your skills using Hess's Law. Be sure to understand how Hess's Law measures enthalpy change for the interactive quiz that includes two problems requiring calculations using Hess's Law.

Quiz & Worksheet Goals

Use these assessment tools to test your knowledge of:

  • Enthalpy
  • Hess's Law
  • Calorimetry
  • Thermochemical equations
  • Chemical reactions

Skills Practiced

  • Reading comprehension - ensure that you draw the most important information from the related lesson on enthalpy and Hess's Law
  • Making connections - use your understanding of the concept of Hess's Law
  • Information recall - access the knowledge you've gained regarding thermochemical equations
  • Knowledge application - use your knowledge to answer questions about chemical reactions

Additional Learning

To learn more about enthalpy change and Hess's Law, review the accompanying lesson titled Using Hess's Law to Calculate the Change in Enthalpy of a Reaction. This lesson covers:

  • Identifying what's included in a thermochemical equation
  • Understanding appropriate usage of Hess's law
  • Defining steps of manipulating thermochemical equations
  • Understanding the key rule for manipulating chemical reactions