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Prac Exam (1 Viewer)
- Thread starter SuperNova
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...a prac required by the syllabus that's in the topic you just studied?
sunny
meh.
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In a titration experiment, the chances you are going to have to do the titration (duh), and do the calculations to work out the concentration of the unknown.
You might want to learn the colour changes for the common indicators, your teacher might not tell you what it is.
You might want to learn the colour changes for the common indicators, your teacher might not tell you what it is.
user
Old enough to know better
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you carry out a prac, usually the instructions are given but sometimes you have to figure out how to do it based on some information. The prac will have something to do with whateve you are doing in class.
Then you answer questions based on your results, and write it up like a prac eg tables, graphs, conclusions.
eg we did a prac exam last year where we had to find out the concentration or something of a sample of hydrochloric acid. We were given some magnesium strips, 3 other samples of known molar HCl and stopwatches, beakers etc. Can't remember details exactly.
Then you answer questions based on your results, and write it up like a prac eg tables, graphs, conclusions.
eg we did a prac exam last year where we had to find out the concentration or something of a sample of hydrochloric acid. We were given some magnesium strips, 3 other samples of known molar HCl and stopwatches, beakers etc. Can't remember details exactly.
Mistress Lilith
Member
When we did the titration prac. exam it was preparing a primary solution of NaOH to find the concentration of acetic acid (?? can't remember now) in vinegar.
Indicator: phenolphthalein
colour change: clear--> pink
(NaOH was in the burrette)
It was pretty basic, the equations for the calculations and stuff was all there as part of the method
Indicator: phenolphthalein
colour change: clear--> pink
(NaOH was in the burrette)
It was pretty basic, the equations for the calculations and stuff was all there as part of the method
yup titrations are pretty easy!
just do the fast run .... wait a bit.. watch it turn fully bright pink.. then do 3 test runs that take ages.... (wait that was the titration comp oops lol
) hehe
titration is pretty basic stuff
unless your teacher asks u to justify everything and i mean everything lol
just do the fast run .... wait a bit.. watch it turn fully bright pink.. then do 3 test runs that take ages.... (wait that was the titration comp oops lol
) hehetitration is pretty basic stuff
unless your teacher asks u to justify everything and i mean everything lol
Mistress Lilith
Member
And if you run out of time-- make up your results but make sure the teacher doesn't see. Or just use your fast run as one of your results