Sunday, December 8, 2013

Chemistry Practical 4

Data Collecting and Processing NO| APPARATUS| cadency| pile/SIZE| 1| Beaker| 1| 100cm3| 2| pipette| 1| 25cm3| 3| Burette| 1| 50cm3| 4| conical flask| 1| 250ml| 5| volumetrical flask| 1| 250ml| 6| weighing balance| 1| -| 7| shabu rod| 1| -| 8| Retort stand| 1| -| Table1: sway of quantity and surface of apparatus used. NO| poppycock| QUANTITY| VOLUME/SIZE| 1| Mass lusty amidosulphuric mordant| 2.5688g| -| 2| Sodium hydrated oxide tooth root| 1 nursing bottle reagent| -| 3| Phenolphthalein indicator| 2 drops| -| 4| Distilled pee| 3 bottle| -| Table2: List of quantity and size of material used NO| MATERIAL| UNCERTAINTIES ±| VOLUME/whole| 1| Burette| 0.05cm3| 50cm3| 2| Pipette| 0.03cm3| 25cm3| 3| Weighing balance| 0.0001g| -| 4| majoritytric flask| 0.15ml| 250ml| Table3: List of apparatus with uncertainties duodecimal Data Experiment| audition 1| Trial 2| Trial 3| sign burette reading (±0.05 cm3)| 0.00| 0.00| 0.00| closing burette reading (± 0.05 cm3)| 26.60| 26.70| 26.70| Volume of NaOH used (±0.10 cm3) | 26.60| 26.70| 26.70| Table1: Volume of Amidosulphuric window glass used. 1. Mass of amidosulphuric acrimonious = 2.5688g (±0.0001g) 2. The amidosulphuric acid is then dissolved with 250cm3 of distilled water.
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qualitative Data 1. The act upon of sodium hydroxide, NaOH solution is glossless. 2. The wring of amidosulphuric acid later on dissolved in water is colourless. 3. The phenolphthalein indicator colour is colourless. 4. The amidosulphuric acid remains its own colour which is colourless although after added with phenol! phthalein indicator for a few drops. 5. The colour of amidosulphuric acid falsify from colourless to light pink when it was titrated with sodium hydroxide solution, which indicated the obliterate point. Calculation Equation for the reaction: H3NSO3 + NaOH ? NaH2NSO3 + H2O 1. Sodium hydroxide (NaOH)...If you want to get a full essay, order it on our website: OrderCustomPaper.com

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