Required Practicals

Question 1

C4: Titration - equipment

Answer 1

burette
pipette and filler
conical flask and white tile
an acid
sodium hydroxide (alkaline)
a suitable indicator,

Question 2

C4: Titration - suitable indicator

Answer 2

methyl orange or phenolphthalein

Question 3

C4: Titration - method

Answer 3

-Use the pipette add 25 cm3 of alkali to conical flask.
-Add a few drops of indicator and put the conical flask on a white tile.
-Fill the burette with acid
-Slowly add the acid from the burette to the alkali swirling to mix.
-Stop adding the acid when the end-point is reached
-Note the final volume reading.

Question 4

C4: Titration - safety

Answer 4

-wear eye protection
-wear gloves as alkali is corrosive

Question 5

C4: Titration - meaning

Answer 5

a method of measuring 2 volumes of 2 solutions that react together
-eg acid/alkali = neutralisation

Question 6

C4: Titration - end point meaning

Answer 6

-where acid and alkali have completely reacted
-measure by indicator
-indicator changes colour permanently