Login

Standard Enthalpy of Formation: Explanation & Calculations

Instructions:

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

question 1 of 3

Standard conditions for enthalpies of formation are

Start Your Free Trial To Take This Quiz

As a member, you'll also get unlimited access to over 70,000 lessons in math, English, science, history, and more. Plus, get practice tests, quizzes, and personalized coaching to help you succeed.

Free 5-day trial
It only takes a few minutes to set up and you can cancel at any time.
Already registered? Login here for access

1. Elements have a delta Hf value of 0.00 kj/mol because

2.

Delta H°f values: CH4(g), -74.8 kJ/mol; CO2(g), -393.5 kJ/mol; H2O(l), -285.8 kJ/mol.

Using the delta H°f data above, calculate delta H°rxn for the reaction below. Reaction: CH4(g) + 2O2(g) ==> CO2(g) + 2H2O(l)

Start your free trial 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

This quiz/worksheet combo will test your knowledge of the standard enthalpy of formation and its role in chemical reactions.

Quiz & Worksheet Goals

Some topics you can test in these assessments are:

  • The standard conditions for enthalpies of formation
  • A meaning of enthalpy as it relates to state property
  • Why elements have a delta Hf value of 0.00 kj/mol

Skills Practiced

  • Information recall - access the knowledge you've gained regarding the standard conditions for enthalpies of formation and understand the reasons for these conditions
  • Knowledge application - use your knowledge to answer questions about a meaning of enthalpy as it relates to state property and comprehend what it defines
  • Problem solving - use acquired knowledge to solve practice problems that ask you to calculate the enthalpy change of a reaction and how much heat a reaction gives off

Additional Learning

Continue to explore information about the standard enthalpy of formation by reviewing the lesson called Standard Enthalpy of Formation: Explanation & Calculations. Some subjects this material covers includes:

  • The energy involved in a chemical reaction
  • What is the standard enthalpy of formation
  • How to calculate enthalpy change of reaction
Support