Wednesday, 6 April 2011

Titrations


1.http://www.dartmouth.edu/~chemlab/techniques/titration.html
2.http://www.triplescience.org.uk/tripsci/chemistry/effectiveteaching/t4_acidsandbases.aspx
3.http://getrevising.co.uk/resources/titrations1 (if asked username: kres0urce@gmail.com password:dubaimarina)
4.http://www.4shared.com/document/yrX7TshJ/Using_indicators_and_carrying_.html
5.These are the steps to carry out a titration to calculate how much acid is needing to react with an alkaline solution:
  1. Measure an already-known volume of the alkali solution into a conical flask using a pipette
  2. Add an indicator solution to the alkali in the flask
  3. Now put the acidic solution into a burette. This long tube has measurements down the side, and a tap on one end and can accurately measure the amount entering the flask. So record the reading on the burette (i.e. starting volume)
  4. Open the tap to release the acid solution. The solution from the burette is released one drop at a time, alongside swirling of the flask to make sure the solutions are mixed
  5. Keep repeating Step 4 until the indicator changes colour to let you know the acid and the alkali have completely mixed
  6. Record the amount of acid you entered by reading the measurement on the burette
Be sure to repeat the entire process two or three times at least to ensure accuracy.
6.QUIZ: http://getrevising.co.uk/resources/titrations



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