Ch, look & maoh
expe
chcoona + h₂
solution a is ethanoic acid, ch. cooh
so...
Chemistry, 15.10.2019 01:20 HealTheWorld
Ch, look & maoh
expe
chcoona + h₂
solution a is ethanoic acid, ch. cooh
solution b is 0.05m sodium hydroxide solution naoh
1. fill burette with solution a
2 place 25cm3 of solution b into a conical flask and add two drops of phenolphthalein
indicator
3. titrate with a until one drop makes the solution colourless.
record the final burette reading and carry out there
ette reading and carry out three other titrations to obtain consistent titre
values
5. calculate the average titre
6. write a balanced equation for the reaction
7. calculate the concentration of a in
a mol/dm3
b. g/dm3
what mass of ethanoic acid will be present in 700cm3 of solution a ?
a
what will happen if methyl orange were used for the titre?
Answers: 2
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