OCR A2 Chemistry Acids

OCR A2 Chemistry Acids

1. Bronsted Lowry Acid Definition

   • A proton donor or An H+ ion donor 

2. Conjugate Acid - Base Pairs

   • Definition
     • A pair of two species that transform into each other by gain or loss of a proton
   • Acid base equilibria involve two acid base pairs

3. Weak Acid Definition

   • An acid which only partially dissociates in solution
   • Examples
     • Ethanoic Acid (CH3COOH)
     • Methanoic Acid (COOH)
     • Propanoic Acid (CH3CH2COOH)

4. Acid - base reactions

   • Acid + Carbonate
     • CASHOCO
     • Forms a salt, H2O and CO2
   • Acid + Base
     • BASHO
     • Forms a salt and H2O
   • Acid + Metal
     • MASH
     • Forms a salt and H2 gas
     • Redox reaction

5. Bronsted Lowry Base Definition

   • A proton acceptor or An H+ ion acceptor

6. Strong Acid Definition

   • An acid which can fully dissociate in solution
   • Examples
     • Hydrochloric Acid (HCl)
     • Nitric Acid (HNO3)
     • Sulphuric Acid (H2SO4)
     • Chloric Acid (HClO4)
     • Hydrobromic Acid (HBr)

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