AP®︎ Chemistry: Topic 6.8 Flashcards

Master key terms and definitions for Topic 6.8 of AP Chemistry – Enthalpy of Formation to help you prep for quizzes and the AP exam.

0%
5 cards total
5 not started
0 learning
0 almost done
0 mastered
Term

Enthalpy of Reaction from Enthalpies of Formation

Definition

Calculate using ΣnΔHf°(products) minus ΣmΔHf°(reactants), including stoichiometric coefficients.

1 / 5
Enthalpy of Reaction from Enthalpies of Formation
Not Started

Calculate using ΣnΔHf°(products) minus ΣmΔHf°(reactants), including stoichiometric coefficients.

6.8.A6.8.A.1
Stoichiometric Coefficients in ΔH°rxn Calculations
Not Started

Multiply each substance’s formation enthalpy by its balanced-equation coefficient before summing.

6.8.A6.8.A.1
Physical State in ΔHf° Tables
Not Started

Use the value matching the substance’s phase, since liquids, gases, and solids have different values.

6.8.A6.8.A.1
Standard Enthalpy of Formation
Not Started

Enthalpy change when one mole of a compound forms from elements in standard states.

6.8.A
Standard States and Elemental ΔHf°
Not Started

Elements in their most stable standard states have standard enthalpies of formation equal to zero.

6.8.A