Testing for Acetic Acid Concentration of Vinegar
How much will I use?
how many tests?
how to obtain high accuracy
5 trials for each type?
What will be the independent variable?
different brands of same type
in different concentrations of water
different types of vinegar
apple cider
balsamic vinegar
white vinegar
What type of test will be required?
titration?
pH levels/scale? universal indicator?
which indicator? would it vary?
have a titre value?
which base? would it vary?
would each type contain different types of acid?
test for acid in general?
identify different types of acid?
different types of acid in one type of vinegar
will separation techniques be required?
separate liquids?
how much of acid for the test?
constant through each test
e.g) apple cider vinegar
citric acid
malic acid
acetic acid
different acid, different indicator in same solution?
different acid, different base?
neutralize?
determine the strength of acid?
pH scale?
how do i find out which indicator is suitable for each type of acid?
will one indicator work for more than one type of acid?
how do i prevent this?
just focus on one?
how to be aware of other acids?
most abundant?
base it on strength?
best value?
use strongest base?
match with strength of acid?
same acid in different brands or same type vinegar
how many tests for each type of vinegar?
time management
accuracy
3, 4 or 5 tests?
20-30ml
will the amount of base solution run out?
if 4 trials for three type of vinegar, total amount of vinegar = 240ml
will there be enough base?
larger volumetric flask?
average
alters independent variable
matching base?
ignore?
creates more uncertainty
state of vinegar
liquid
titration is suitable for testing
which base will neutralize with acetic acid?
sodium hydroxide?
sodium carbonate?
phenolphthalein?
methyl orange?