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Formula Sheets / Chemistry

Chapter 33

Practical Chemistry

Revise with flashcards Download this chapter (PDF) All Chemistry formulas (PDF)
Detection of elements and groupsSalt analysis and titrations

Detection of elements and groups

  • Lassaigne's test

    N: Prussian blue;  S: violet with sodium nitroprusside;  halogens: AgX precipitate

Salt analysis and titrations

  • group reagents: dil. HCl (Pb2+, Ag+); H2​S in acid (Cu2+, Cd2+); NH4​OH (Fe3+, Al3+)
  • titration: N1​V1​=N2​V2​;phenolphthalein for strong base, methyl orange for strong acid
Chemistry in Everyday LifePurification and Characterisation of Organic Compounds