Chemistry Practical 4

Data Collecting and Processing NO| APPARATUS| criterion| pile/SIZE| 1| Beaker| 1| 100cm3| 2| pipette| 1| 25cm3| 3| Burette| 1| 50cm3| 4| conelike flask| 1| 250ml| 5| volumetrical flask| 1| 250ml| 6| calculation balance| 1| -| 7| wish-wash rod| 1| -| 8| Retort stand| 1| -| Table1: sway of quantity and sizing of apparatus used. NO| secular| QUANTITY| VOLUME/SIZE| 1| Mass hard 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/ unit| 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 decimal Data Experiment| audition 1| Trial 2| Trial 3| sign burette reading (±0.05 cm3)| 0.00| 0.00| 0.00| last(a) 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 astringent used. 1. Mass of amidosulphuric acidic = 2.5688g (±0.0001g) 2. The amidosulphuric acid is then dissolved with 250cm3 of distilled water.

qualitative Data 1. The act upon of sodium hydroxide, NaOH solution is glossless. 2. The people of color of amidosulphuric acid subsequently 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 wi! th phenolphthalein indicator for a few drops. 5. The colour of amidosulphuric acid intensify from colourless to light pink when it was titrated with sodium hydroxide solution, which indicated the annul 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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