Potassium dichromate solution Essay Example for Free

Potassium dichromate solution Essay 1. Deep colour of potassium permanganate solution will show out two meniscuses but according to burette using, we are try to measure the volume by different. Therefore if we technically use the same meniscuses in the all reading, it will be fine for the experiment. 2. Store the dilute hydrogen peroxide in a cool, dry and well-ventilated area. Also put it in a steel or glass and opaque container. On the other hand, keep away from heat, flame and light. Conclusion: In titration I, we standardize the iron(II) solution is 0. 10M with N-phenylanthranilic acid indicator and Barium diphenylamine sulphonate indicator. In titration II, we determined the potassium permanganate solution is 0. 02M. In titration III, we estimated the dilute hydrogen peroxide is 0. 038g and we found out the molarity of it is 0. 045M. And for the original hydrogen peroxides percentage is 7. 67%(w/v) and volume concentration is 25. 27 volume. Titration III: Estimation of the concentration of hydrogen peroxide solution Titrant (in burette): Potassium Permanganate Solution Titrate (in Conical flask): 25. 0cm3 of Hydrogen Peroxide Solution Indicator used: Potassium Permanganate Solution Colour of indicator changed from: Colourless to Pink Titration II: Determination of the potassium permanganate solution Titrant (in burette): Potassium Permanganate Solution Titrate (in Conical flask): 25. 0cm3 of Fe2+ Solution Indicator used: Potassium Permanganate Solution Colour of indicator changed from: Green to Pink