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Chemistry Lab report

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Introduction

Chemistry Lab report: * Aim: To determine the concentration of acetic acid (CH3COOH)/Vinegar in the given sample. * Hypothesis- The concentration will be determined by carrying out an experiment of titration of titrating the acetic acid with sodium hydroxide(NaOh) and getting the concentration by using the formula M1V1=M2V2 where m is the molarity and v is the volume. * Apparatus: The materials needed for the experiment a pipette for taking exactly 25 ml of sodium hydroxide to put into the conical flask. A burette is needed for the acetic acid for an exact amount of volume to take. ...read more.

Middle

And the drops of phenoptelin (indicator) used for the experiment. * Constant: The factors that were constant in the experiment are the volume of NaOH used for all the three readings and the concentration of the sodium hydroxide throughout the experiment. * Procedure of the experiment: 1. Put the burette in the burette stand and rinse the burette two or three times with distilled water so that the burette is clean for the investigation. 2. After it is rinsed, pour the acid into the burette and close the burette tightly, do it does not drip. 3. Use the pipette to put exactly 25 cm3 of Sodium Hydroxide into the conical flask and put in 2 to or 3 drops of phenoptelin indicator into the flask to make the color pink for the experiment. ...read more.

Conclusion

* The results that I obtained from the experiment: * Volume of 1st titer: 32.2 cm3, Volume of 2nd titer- 30cm3, Volume of 3rd titer- 31 cm 3. Average- 31.06 cm3. To obtain the concentration of the acetic acid, we use the formula M1V1=M2V2 so the concentration is 25�1= 31.06�X= 25�31.06=0.8 moles. * Conclusion- To conclude I got the concentration right in which is 0.8 moles/dm3 by using the procedure and the formula I mentioned above. * Evaluation: If I could do the experiment again, I would take much more accurate readings, I would rinse the materials used more so that i could get a much more accurate titrate reading. I would try to used different methods other than the one mentioned above to determine the volume of CH3COOH. ...read more.

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