This introduction covers The Detective's Technique within Titrations (HT) for GCSE Chemistry. Revise Titrations (HT) in Quantitative Chemistry for GCSE Chemistry with 22 exam-style questions and 20 flashcards. This topic appears regularly enough that it should still be part of a steady revision cycle. It is section 1 of 13 in this topic. Use this introduction to connect the idea to the wider topic before moving on to questions and flashcards.
Topic position
Section 1 of 13
Practice
22 questions
Recall
20 flashcards
📖 The Detective's Technique
Titration is like perfectly balancing a see-saw. You carefully add weight to one side (drip by drip) until it's exactly balanced with the other. The moment it tips (colour changes) is when you've added exactly the right amount. One drop too many and you've overshot — that's why you add slowly at the end!
A titration is a technique where you add one solution (of known concentration) to another solution (of unknown concentration) until the reaction is complete. By measuring exactly how much you added, you can calculate the unknown concentration.
The genius of titration is in how you know when the reaction is complete. You add an indicator — a chemical that changes colour at the exact moment all the acid has reacted with all the alkali (the equivalence point). When you see the colour change, you stop immediately!
The key equipment:
- Burette — graduated tube with tap, measures to ±0.05 cm³ precision
- Pipette — transfers exact fixed volume (e.g., 25.0 cm³)
- Conical flask — holds the solution being titrated
- Indicator — shows when reaction is complete (e.g., phenolphthalein, methyl orange)