Complex formation and competition for cations

Complex formation and competition for cations Practical 12 CinC :

HaZCard : 3C, 5, 6, 36A, 52, 55C, 87, 95A,47B

• Eye protection and gloves

• 6 X test tubes

• 2 Teat pipettes

• Access to approximately 0.1 M solution of : 125cc bottle are enough

  • Iron(III) chloride  dissolve 16.2g of FeCl3 in 1L of DW

  • Potassium thiocyanate dissolve  9.7g of KSCN in 1L of DW

  • Sodium 2-hydroxybenzoate (salicylate) Dissolve 16.0g of HOC6H4COONa in 1 L of DW

  • Edta (Disodium salt. 1 2Diaminoethane-n acid disodium Shelf 1) Dissolve 33.6g of [CH2N(CH2COOH.CH2COONa]2 in 1L of DW)

  • Ammonium ethanedioate ( Ammonium oxalate) Dissolve 14.2g of (COONH4)2.H2O in 1 L of DW

  • Silver nitrate 0.05M (From A level)

  • Sodium Chloride 0.1M

  • Ammonia solution (From A level)

  • Potassium bromide 0.1M

  • Potassium iodide 0.1 M

  • Sodium thiosulphate 0.1 M

Edta (Disodium salt - ID num 1006)  

• • Edta (Disodium salt. 1 2Diaminoethane-n acid disodium Shelf 1) 

  • Dissolve 33.6g of [CH2N(CH2COOH.CH2COONa]2 in 1L of DW)