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Quantitative ChemistryIntroduction

The Detective's Technique

Part of Titrations (HT) · GCSE GCSE Chemistry revision

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 shows up very often in GCSE exams, so students should be able to explain it clearly, not just recognise the term. It is section 1 of 14 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 14

Practice

22 questions

Recall

20 flashcards

📖 The Detective's Technique

Imagine you're a detective. Someone gives you a mystery solution and asks "Exactly how much acid is in here?" You can't just guess. You need precision — down to 0.05 cm³. Welcome to titration: chemistry's most precise measuring technique, used in medicine, food science, and forensic labs worldwide.
⚖️ The Perfect Balance Analogy

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)

Keep building this topic

Read this section alongside the surrounding pages in Titrations (HT). That gives you the full topic sequence instead of a single isolated revision point.

Titration ApparatusHow It Works: The Endpoint Tells You the Exact RatioHigher Tier: Titration Calculations

Practice Questions for Titrations (HT)

What is the purpose of a titration?

  • A. To find the unknown concentration of a solution
  • B. To measure the temperature change of a reaction
  • C. To separate a mixture into its components
  • D. To identify the gas produced in a reaction
1 markfoundation

Explain why the burette should be rinsed with the acid solution before filling it for a titration.

2 marksstandard

Quick Recall Flashcards

What is a titration?
A technique to find an unknown concentration by adding a solution of known concentration until the reaction is complete You measure exactly how much was added
What are concordant results?
Titration results within 0.10 cm³ of each other These are the reliable results used to calculate the mean

22 questions on Titrations (HT) — practise free

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