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practicals
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Total cards: 7•Content version: v4•Public deck•Updated: 8/1/2026
Card preview (7)
#1
Front (Question)
whymay percentage yeild be low?
Back (Answer)
reaction does not undergo completion loss of solid in transfer between aparatus
#2
Front (Question)
what kind of filtration shjould you use in recrystilisation and why?
Back (Answer)
vaccuum filtration so that the solution remains hot
#3
Front (Question)
how can you dry a solid?
Back (Answer)
in an oven at lower temperature to its melting point
#4
Front (Question)
how do you calibrate a pH meter?
Back (Answer)
use 2 buffer solutions of known pH
#5
Front (Question)
Why might titration values get bigger?
Back (Answer)
they did not mix the orginal solution properly so higher concentration at the bottom
#6
Front (Question)
why do you add anti bumping granuals?
Back (Answer)
to allow the liquid to boil more gently
#7
Front (Question)
what is meant by heating under reflux?
Back (Answer)
boiling a mixture condensing the vapour to return it to the flask