AICE Chemistry | Chapter 6.2: Standard Enthalpy Changes

This lecture covers Section 6.2: Standard Enthalpy Changes, from Chapter 6: Enthalpy Changes. In chemistry, comparing energy changes is only fair if we use the same "ruler." We'll define standard conditions and the specific definitions for formation, combustion, and neutralisation that you must memorise for the exam.

In this video, we will cover:
Standard Conditions: Defining the standard pressure (101 kPa), temperature (298 K), and physical states used for comparing enthalpy changes.

Standard Enthalpy Change of Reaction: The general definition for any reaction under standard conditions.

Standard Enthalpy Change of Formation: The energy change when one mole of a compound is formed from its elements.

Standard Enthalpy Change of Combustion: The energy change when one mole of a substance is burnt in excess oxygen.

Standard Enthalpy Change of Neutralisation: The energy change when an acid and alkali react to form one mole of water.

This video is designed to align with the Cambridge AICE Chemistry (9701) curriculum and is based on the official course textbook and lecture materials. These definitions are frequently asked in Paper 1 and Paper 2, so mastery here is essential!

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