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The Relative Formula Mass of an Unknown Acid.
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- Words:
- 769
- Submitted:
- Thu Sep 11 2003
... The Relative Formula Mass of an Unknown Acid Introduction I have been provided with a solution of unknown monobasic acid. By titration with a standard solution of sodium hydroxide I am to calculate its molarity and hence the relative formula mass of this unknown acid. (We can assume the concentration of the sodium hydroxide is 0.1M) Procedure 1. Using the funnel, rinse the burette with the acid solution and fill it accurately with the same solution until the 0cm3 mark (Do not forget to rinse and fill the tip first though). 2. Using the pipette filler, rinse the pipette with some of the sodium hydroxide solution and carefully transfer 25.0cm3 of the solution to a clean 250cm3 conical flask (Remembering to touch the bottom of the flask with the tip of the pipette for ten seconds to fully empty the pipette). 3. Add 3-4 drops of phenol red indicator to the sodium hydroxide solution. (The indicator
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