# The pH Scale and Calculations

> This section is the pH scale 0–14 and pH = −log\[H3O+\] for strong acids and strong bases. It is not auto-ionisation of water or Kw as the lesson. It is not Ka / Kb ranking. It is not a wrap of strong…

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## Full notes

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## More in Acids and Bases

- [Auto-ionisation of Water and Kw](https://www.hlayiso.com/grade-12/physical-sciences/notes/acids-and-bases/auto-ionisation-of-water-and-kw) — Previous section
- [Summary: Types of Acids and Bases](https://www.hlayiso.com/grade-12/physical-sciences/notes/acids-and-bases/summary-types-of-acids-and-bases) — Next section
- [All Acids and Bases sections](https://www.hlayiso.com/grade-12/physical-sciences/notes/acids-and-bases)

## Frequently asked questions

### What will I learn in "The pH Scale and Calculations"?

This section covers The pH Scale and Calculations as part of Acids and Bases in Grade 12 Physical Sciences. You'll find clear explanations, worked examples, and key definitions aligned to the CAPS curriculum.

### Is this section aligned with the CAPS curriculum?

Yes. All notes on Hlayiso, including "The pH Scale and Calculations", are written against the official CAPS curriculum and ATP for Grade 12 Physical Sciences.

### What should I study after "The pH Scale and Calculations"?

Continue with the next section in Acids and Bases, or test your understanding with the interactive quiz linked to this section.

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