Reagents

Reagents

  1. 40% NaOH solution
  2. 2% Boric acid
  3. 0.1N H2SO4: Standardize against standard 0.1N Na2CO3 using methyl red as indicator.
  4. Standard 0.01N H2SO4 solution:Prepare by diluting the standardized 0.1N H2SO4
  5. Mixed Indicator: Dissolve 80 mg of bromocresol green and 16 mg of methyl red in 100 ml of 95% ethanol.
  6. Digestion mixture: K2SO4 : Na2SO4: CuSO4 (9:1:1)
Last modified: Monday, 19 March 2012, 6:08 AM