AH Chemistry - Stoichiometry

AH Chemistry - Stoichiometry

1. Volumetric Analysis

   • Dilution
     • C1V1 = C2V2
   • Standard Solution
   • Primary standard
     • High GFM
     • Stable in air
     • High purity
     • Water soluble

2. Dependent on writing BALANCED EQUATIONS using the 2 triangles

3. Gravimetric Analysis

   • Conversion of a chemical to a product that can be isolated and weighed
   • Used if analyte is insoluble, where volumetric analysis won't work
   • E.g. a solid formed in a reaction

4. Complexometric

   • Metal ion concentrations calculated when forming complexes
   • Usually EDTA 1:1 ratio with metal ion

5. Acid/base and redox

   • As at National 5 and Higher

6. Calculations can be completed by...

   • Working out the number of moles of given info
   • Using mole ratio to work out number of moles of unknown
   • Calculate mass/concentration