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Why chemists use pH

Why chemists use pH

pH scale from 0 to 14 showing factor of 10 changes in hydrogen ion concentration and neutral pH 7

Hydrogen ion concentrations in water span a huge range, from about 1 mol dm−31 \, \text{mol dm}^{-3}1mol dm−3 in very acidic solutions down to about 1×10−14 mol dm−31 \times 10^{-14} \, \text{mol dm}^{-3}1×10−14mol dm−3 in very alkaline ones. The pH scale compresses that awkward range into manageable numbers.

Definition and determination of pH (A-level only) Lesson

  1. A Level
  2. /Chemistry
  3. /Definition and determination of pH (A-level only)

Step-by-step lessons on AQA A Level Chemistry Definition and determination of pH (A-level only). Each one builds up to exam-style questions. Build confidence with atomic structure, bonding and moles calculations early on, since these underpin the more demanding organic mechanisms, equilibrium and practical-analysis topics that dominate Year 2.

Lessons