Recent Lessons

Show all results for ""

Feature Overview

Ace your exams with our all-in-one platform for creating and sharing quizzes and tests.

Quizzes

Create quizzes and tests automatically from your content using AI.

Flashcards

Automatically turn your notes into digital flashcards.

Share, Export & Embed

Share with classmates or export to Excel and your learning management system.

Stats & Reporting

Auto-grading quizzes and tests with detailed stats and reports.

Mobile Apps

The smarter way to study – wherever you are.

Pricing

Search...

Thermochemistry and Glucose Metabolism Quiz

8 Questions

0 Views

Thermochemistry and Glucose Metabolism Quiz

Choose a study mode

Play Quiz

Study Flashcards

Spaced Repetition

Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the value of ΔHrxn for the reaction of maleic acid to fumaric acid at 298 K?

23.3 kJ mol−1

-15.0 kJ mol−1

-23.3 kJ mol−1 (correct)

-7.6 kJ mol−1

Which of the following is the correct balanced equation for glucose metabolism?

C6H12O6 + 3 O2 → 6 CO2 + 3 H2O

C6H12O6 + O2 → 6 CO2 + 6 H2O

C6H12O6 + 6 O2 → 6 CO2 + 6 H2O (correct)

C6H12O6 + 2 O2 → 6 CO2 + 3 H2O

What is the standard enthalpy of formation for glucose (C6H12O6) at 305 K?

−393.5 kJ mol−1

−285.8 kJ mol−1

0 kJ mol−1

−1273.0 kJ mol−1 (correct)

What is the enthalpy of formation for water (H2O) at 305 K?

−285.8 kJ mol−1 Signup and view all the answers

If the enthalpy of formation of diatomic oxygen (O2) is considered, what is its value?

0 kJ mol−1 Signup and view all the answers

How is ΔHrxn calculated for the conversion of maleic acid to fumaric acid?

ΔHrxn = Hf(fumaric) - Hf(maleic) Signup and view all the answers

When calculating enthalpy changes, what is the significance of using standard conditions?

It standardizes the enthalpy values based on 298 K and 1 atm pressure. Signup and view all the answers

In the context of thermochemistry, what does the term 'enthalpy of formation' specifically refer to?

The heat change during the formation of one mole of a compound from its elements. Signup and view all the answers

Study Notes

Thermochemistry Problems

Determine the enthalpy of reaction (ΔHrxn) for the conversion of Maleic acid to Fumaric acid.
- The enthalpy of formation of Fumaric acid is -807.6 kJ/mol.
- The enthalpy of formation of Maleic acid is -784.4 kJ/mol.
- The enthalpy change for the reaction can be calculated by subtracting the enthalpy of formation of the reactants from the enthalpy of formation of the products.
- ΔHrxn = ΔHf°(products) - ΔHf°(reactants)
- ΔHrxn = (-807.6) - (-784.4) = -23.3 kJ/mol

Glucose Metabolism

Glucose is metabolized in the presence of oxygen to produce carbon dioxide and water.
- The balanced chemical equation for this reaction is: C6H12O6 + 6O2 → 6CO2 + 6H2O
- The enthalpy of formation (ΔHf°) for glucose is -1273.0 kJ/mol.
- The enthalpy of formation for oxygen is 0 kJ/mol.
- The enthalpy of formation for water is -285.8 kJ/mol.
- The enthalpy of formation for carbon dioxide is -393.5 kJ/mol.
- The enthalpy change for the reaction can be calculated using the following equation:
  - ΔHrxn = Σ ΔHf°(products) - Σ ΔHf°(reactants)
  - ΔHrxn = [6(-393.5) + 6(-285.8)] - [-1273.0 + 6(0)] = -2803.0 kJ/mol

Studying That Suits You

Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

Description

Test your knowledge on thermochemistry concepts, including the calculation of enthalpy changes for reactions like the conversion of Maleic acid to Fumaric acid. Additionally, explore glucose metabolism and its enthalpy of formation. Challenge yourself with these important biochemical reactions!