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qualiltative chemistry practical on 6th feb friday?

ptma91

i am doing OCR biology and i have qualitative chemistry pratical on friday :frown:

, i have no idea about the practical that i am doing. so, can anyone give me some tips for it ? :smile:

i dont even know what topic it is based on :frown:

. and what revision and preparation might be useful for that practical?

Reply 1

Umayrt

same ive got the qualitative c.w on friday the 6th aswell
you basically have to make copper2sulfate. the typical chemistry experiment.. with the blue crystals..
its qualitative because your teacher is going to examine your practical skills e.g. precise measurements and cleaning up spilages.
im stuck aswell . dnt no wht to revise.
but my teacher has jus suggested i go over the method for making copper2sulfate and go over the moles business.
sorry its a bit bland.
if u have any more information regarding this can u get back to me please.
appreciate it.

Reply 2

shengoc

qualitative analysis practical can sometimes be tough, as the observations matter.

If you see efferversence(bubbles), make sure you test for the gas using splinter and ph paper.

Colour changes are much easier. Watch out if a blue solution turns much darker blue after adding ammonia, that means Cu2+ is present(usually). Think transition element chemistry, the coloured solutions are usually due to the d-block transition elements(in compounds).