Logged out
Access All our Essays in an Instant
Swap your work for FREE access, or pay £4.99 for instant access
The experiment is the mixing of hydrochloric acid and calcium hydroxide together and using an appropriate method to find the concentration of limewater.
Member rating:
(3 votes)
| Words:
| Submitted: Mon Sep 29 2003
Page Preview
On the left is an image preview of every page of this document, and below are the first 150 words with formatting removed:
Chemistry Assessed Practical 2 Jared Ching Planning: Introduction and background: The experiment is the mixing of hydrochloric acid and calcium hydroxide together and using an appropriate method to find the concentration of limewater. This is the equation of the reaction: Ca(OH)2(aq) +2HCl(l) CaCl2(aq)+2H2O(l) Knowing this and using calculations we can work out the concentration of limewater having titrated the two solutions, from the volumes and concentration of HCl. In the presence of Phenolphthalein hydroxides turn pink, when neutralized, go colourless, this will be the indication of the end of the reaction, when all limewater is reacted. However as stated in "Chemistry in context", phenolphthalein has a very high end point to its pH scale, making it suitable for use in titrations with fairly high concentrations. But clearly using a weak base like calcium hydroxide would make methyl orange a better choice. Using phenolphthalein would change in colour before the point of balance between acid and base,...
To see the full version of this document, and 145,348 others
