Concentration of a limewater solution by titration against a standard solution of hydrochloric acid. - page 3
Keywords: Chemistry practical concentration limewater hydrochloric acid titration
By Jenny on 02/07/2009
Level: A Level (Year 13)
Page Number: 3 of 3 pages: 1 2 3
to ensure accuracy I must make sure the calibration lines are parallel in my line of sight and that I take my reading from the bottom of the meniscus.
Information from: http://www.csudh.edu/oliver/demos/buretuse/buretuse.htm
Hazards
This experiment uses hazardous chemicals.
The 2.00 molar hydrochloric acid could cause serious permanent damage on contact with the eyes or skin.
Concentrated solutions of this acid are extremely corrosive; very dilute solutions are mildly corrosive. It is also toxic by inhalation - the concentrated solution releases dangerous quantities of hydrogen chloride vapour
To be safe when using this I will always wear safety glasses and be careful not to let the acid come into contact with my skin. I will wear gloves when handling the concentrated acid.
Eye contact: Immediately flush the eye with plenty of water. Continue for at least ten minutes and call for immediate medical help.
Skin contact: Wash off with plenty of water. Remove any contaminated clothing. If the skin reddens or appears damaged, call for medical aid.
If swallowed: Drink plenty of water and call for immediate medical help.
The limewater and phenolphthalein could also be dangerous if I got them in my eye or swallowed them and should be washed out immediately with plenty of water.
Information on hazards from: http://ptcl.chem.ox.ac.uk/~hmc/hsci/chemicals/hsci_chemicals_list.html
Last 5 comments…
There have been no comments posted for this article, but you need to register if you want to be the first!