Skip to content

PRO TIP Block youtube.com at the DNS level — Pi-hole, NextDNS or your hosts file — but allow youtube-nocookie.com and i.ytimg.com. These tutorials keep playing; the rabbit hole does not.

Learning without distractions

Thermodynamics | Part 2 of 2 | Gibbs Free-Energy Change and Entropy Change | A level Chemistry

19.6K views on YouTube

Explore More & Full Notes
📄 All A Level Chemistry Videos: https://drive.google.com/file/d/1s3I5prjbJRR1U1lcKpXO9TQpQMaVoP66/view

📝 Download the full notes PDF of this lesson: https://payhip.com/b/cvL1N
Tip: These are exact copies of the handwritten notes used in the video — includes slides, reaction summaries, diagrams, and rules for Period 3 oxides, perfect for revision and exam practice.

Gibbs Free-Energy Change and Entropy Change

Thermodynamics | Part 2

A level Chemistry | Explained

00:05 Introduction
00:30 Feasible reactions
02:27 Enthalpy Change and Feasible Reactions
03:28 Entropy = Disorder
04:59 Temperature and Entropy
07:05 Number of Moles and Entropy
09:03 Entropy Change Calculation
11:45 Gibbs Free Energy Change
13:42 Free Energy and Feasible Reactions
15:21 Free Energy Change Rules
18:19 Calculating Free Energy Change
21:16 Activation Energy
23:00 Temperature and Change becomes Feasible
25:01 Changes of State
27:18 Free Energy Change Graphs
28:24 Positive Entropy Change Graph
30:58 Negative Entropy Change Graph
32:46 All 4 Free Energy Change Graphs
34:29 Free Energy and the Extent of a Reaction