Enthalpy of Combustion

Presentation

•

Chemistry

•

10th Grade

•

Medium

•

NGSS

HS-PS1-4, HS-PS3-4, HS-PS3-1

Standards-aligned

Angela Toh

Used 7+ times

FREE Resource

13 Slides • 14 Questions

Enthalpy of Combustion

By Angela Toh

Recall:

Multiple Choice

Match the definition below to the correct term.

The enthalpy change that takes place when one mole of a compound is formed from its elements in their standard states under standard conditions.

The enthalpy of neutralisation

The enthalpy of combustion

The enthalpy of formation

The enthalpy of reaction

Multiple Choice

Diagram below shows

Standard lattice enthalpy

Standard enthalpy of precipitation

Standard enthalpy of formation

Standard enthalpy of hydration

Multiple Choice

What do we mean by the term standard conditions

1atm, 20C and 1moldm³

1atm, 0K and 1moldm³

10atm, 273K and 10mol/dm³

100kPa, 298K and 1mol/dm³

Fill in the Blanks

Checkpoint 6 Question 2

Find $\Delta H_{reaction}$ for the following reaction:

N₂O₄ (g) + 3CO (g) $\rightarrow$ N₂O (g) + 3CO₂ (g)

Type answer...

Checkpoint 6 Q2

Try drawing the energy cycle.

Fill in the Blanks

Checkpoint 6 Question 3

Type answer...

Checkpoint 6 Question 3

Try drawing the energy cycle.

Multiple Choice

Define standard enthalpy of combustion.

Heat released when one mole of substance is burnt completely in excess oxygen.

Heat absorbed when one mole of substance is burnt completely in excess oxygen under standard state.

Heat released when one mole of substance is burnt completely in excess oxygen under standard conditions with all substances being in their standard states.

Heat change when one mole of substance is burnt partially in excess oxygen under standard state.

Multiple Choice

What does the circle mean in ΔH°?

Standard Conditions (T=298.15 K P=1 atm)

Standard Temperature and Pressure (T=273.15 K P=1 atm)

Degree K

Degree C

Multiple Choice

What is the name of this enthapyl change

Enthalpy change of formation

Enthalpy change of combustion

Enthalpy change of reaction

Enthalpy change of atomisation

Multiple Choice

Which of these equations could represent a standard enthalpy change of combustion? (They are all correctly balanced)

2 C₄H₁₀ (g) + 13 O₂ (g) → 8 CO₂ (g) + 10 H₂O (l)

C₄H₁₀ (g) + 6.5 O₂ (g) → 4 CO₂ (g) + 5 H₂O (l)

C₄H₁₀ (g) + 4.5 O₂ (g) → 4 CO (g) + 5 H₂O (l)

C₄H₁₀ (g) + 6.5 O₂ (g) → 4 CO₂ (g) + 5 H₂O (g)

Multiple Choice

Diagram below shows

Standard enthalpy of combustion

Standard enthalpy of solution

Standard enthalpy of formation

Standard enthalpy of reaction

Example 10 in Notes Pg 29

Energy Cycle:

The formation of ethyne (C₂H₂(g) can be represented by the following equation:

2C(graphite) + H₂(g) → C₂H₂(g)

Draw an enthalpy cycle diagram relating the above equation to carbon dioxide and water.

Heat of combustion

Example 10 (Pg 29)

Multiple Choice

The following equation shows the combustion of heptane, C₇H₁₆, in excess oxgen.

C₇H₁₆(l) + 11 O₂(g) → 7 CO₂(g) + 8 H₂O ΔH= -5 512 kJ mol^-

The combustion of heptane in excess oxygen releases 1 378 kJ of energy.

What is the mass of heptane used?

[Use the relative atomic mass of H = 1 and C = 12]

25.0 g

36.0 g

77.0 g

88.0 g

Calculations using enthalpies of combustions

Fill in the Blanks

Calculate the enthalpy change of formation (in kJ mol^-1) of propane, CH₃CH₂CH₃(g) using the data given in the table.

Type answer...

Answer

Fill in the Blanks

Calculate the enthalpy change of formation (in kJ mol^-1) of propane, CH₃OH(l) using the data given in the table.

Type answer...

Answer

Multiple Choice

A simple calorimeter was used to determine the enthalpy of combustion of ethanol. The experimental value obtained was -920 kJ/mol. The Data Booklet value is -1371 kJ/mol. Which of the following best explains the difference between the two values?

incomplete combustion of the fuel

heat loss to the surroundings

poor ventilation in the laboratory

inaccurate temperature measurements

Enthalpy of Combustion

By Angela Toh

Show answer

Auto Play

Slide 1 / 27

SLIDE

Similar Resources on Wayground

17 questions

Intermolecular Forces

Presentation

•

10th Grade

22 questions

SENYAWA HIDROKARBON

Presentation

•

11th Grade

20 questions

Free Fall

Presentation

•

10th Grade

20 questions

Stress

Presentation

•

10th Grade

20 questions

Microbiology intro

Presentation

•

10th Grade

20 questions

fast food

Presentation

•

19 questions

TYPES OF CHEMICAL REACTIONS.

Presentation

•

10th Grade

17 questions

Aqueous Solution

Presentation

•

10th Grade

Popular Resources on Wayground

10 questions

Safety Day 2026 – Student Review

Quiz

•

9th Grade

21 questions

Continents and Oceans

Quiz

•

6th Grade

20 questions

Parts of Speech

Quiz

•

5th Grade

16 questions

Subject & Predicate

Quiz

•

5th Grade

25 questions

Multiplication Facts

Quiz

•

5th Grade

12 questions

Map Skills

Quiz

•

3rd Grade

22 questions

Continents and Oceans

Quiz

•

5th Grade

15 questions

Rounding Decimals

Quiz

•

5th Grade

Discover more resources for Chemistry

20 questions

electron configurations and orbital notation

Quiz

•

9th - 12th Grade

25 questions

Writing and Naming Binary Ionic compounds

Quiz

•

10th Grade

20 questions

COUNTING ATOMS

Quiz

•

10th Grade

20 questions

Physical or Chemical Change/Phases

Quiz

•

8th Grade - University

15 questions

Periodicity Module Exam Practice Quiz

Quiz

•

9th - 12th Grade

20 questions

Naming Ionic Compounds

Quiz

•

10th Grade

45 questions

Chem Unit 3 Review

Quiz

•

10th Grade

16 questions

History of the Atomic Theory

Quiz

•

10th Grade