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Limiting Reactant

2 min read

The wiki page has been created at /Users/ryan/Documents/LLM Wiki/wiki-web/wiki/IGCSE Chemistry/Limiting Reactant.md and the Chem-Index has been updated to include it.

Here is a summary of what was written:

File: /Users/ryan/Documents/LLM Wiki/wiki-web/wiki/IGCSE Chemistry/Limiting Reactant.md

Structure:

  • Frontmatter with title, summary, tags, and creation date
  • 5-sentence in-depth definition paragraph introducing limiting reactant, excess reactant, and why the concept matters
  • ## What is the Limiting Reactant? — definitions table, worked example with 2H2 + O2 → 2H2O (3 mol H2, 2 mol O2, H2 is limiting)
  • ## Real-World Analogy: Making Sandwiches — 2 bread + 1 cheese → 1 sandwich, bread runs out first
  • ## How to Identify the Limiting Reactant — step-by-step method (balanced equation → moles → divide by coefficient → smallest = limiting)
  • Sub-sections with worked mass examples: Mg + O2 → MgO (both exact stoichiometric and one with excess)
  • ## Calculating the Amount of Product from the Limiting Reactant — theoretical yield calculation
  • ## Finding the Amount of Excess Reactant Remaining — mass of leftover reactant
  • ## The Limiting Reactant Determines When a Graph Levels Off — cross-link to Rates of Reaction
  • ## Importance in Industrial Chemistry — Haber process example, cost efficiency, cross-link to Percentage Yield and Purity
  • ## Key Points, ## Key Concepts from Past Papers, ## Keywords from Past Papers
  • ## Related Notes with wikilinks: Mole, Reacting Masses, Chemical Equations and Calculations, Percentage Yield and Purity, Relative Masses and Moles, Rates of Reaction, Concentration and Gas Volumes, Haber Process and Ammonia
  • ## Sources (OpenStax, BBC Bitesize, Cambridge syllabus, CK-12)
  • ## Past Paper Sources (6 past paper references)
  • ## Common Misconceptions table with 5 entries covering the mass-vs-moles confusion, both-reactants-used-up myth, excess-reactivity, adding-more-excess, and mass-comparison fallacy

Index updated: /Users/ryan/Documents/LLM Wiki/wiki-web/wiki/IGCSE Chemistry/IGCSE-Chem-Index.md — added Limiting Reactant to the Stoichiometry section (Section 3) between Reacting Masses and Percentage Yield and Purity.