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Titration - The purpose of our experiment is to find the concentration of a sample of sulphuric acid accurately.

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Introduction

Chemistry AS Level Coursework - Titration - Sumit Dey The purpose of our experiment is to find the concentration of a sample of sulphuric acid accurately. We are provided with a range of indicators, solid anhydrous sodium carbonate and access to all laboratory glassware and equipment. Apparatus needed: - Requirements to produce a Sodium Carbonate solution: - Electronic Balance (accurate to 2 decimal places) Goggles Spatula Distilled Water (250cm3) Anhydrous Sodium Carbonate (2.65g) Beaker - 250cm3 Stirring Rod Petri Dish Pipette Volumetric flask Requirements for the titration experiment: - Goggles Burette (50cm3) Stand and Clamp Conical flask Sulphuric (IV) Acid (n*50cm3 based on how many repeats are conducted) ...read more.

Middle

2. Place a funnel into the top of the burette and then rinse the burette out by letting some sulphuric acid run through it. 3. Make sure the burette tap is closed and then fill the burette with sulphuric acid until the meniscus is in line with the 50cm3 mark on the Burette. Then remove the funnel. 4. Place a white tile underneath the burette. 5. With the pipette and pipette filler, measure 25cm3 of the sodium carbonate solution and place that in a conical flask (make sure all this equipment is rinsed with sodium carbonate solutions before use). 6. Pour in approximately 10cm3 of Methyl Orange indicator into the conical flask with the sodium carbonate solution. ...read more.

Conclusion

Safety Procedures The experiment deals with chemicals. Although these are only classed as irritants, make sure goggles and lab coats are worn to prevent damage to skin, eyes and clothes. Accuracy points How I devised my plan to give me accurate results: - * By rinsing out the equipment, with some of the solution that is going to go in it, it allows anything that could react with the solution (and give inaccurate results) does react with the solution and get washed out. * By slowing down the rate at which the sulphuric acid falls into the conical flask near the end of the reaction, I am giving the experimenter a higher chance of getting the exact place at which the full neutralisation takes place. Results The results of the experiment are as follows: Preliminary Experiment: 12. ...read more.

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