1. Fill the burette with the acid s

1. Fill the burette with the acid solution. Take the initial reading from the bottom of
the meniscus and record in a table.
2. Pipette 25.0 ml of the alkali into a clean dry conical flask.
3. Add 2 or 3 drops of indicator to the alkali.
4. Whilst swirling run the acid into the alkali.
5. Stop the titration at the point at which the colour change (from pink to colourless) is
permanent, even on swirling. This is the end point. Record the volume shown in the
burette.
6. Check you have sufficient acid for another titration. Wash out your conical flask and
refill with another 25 ml sample of alkali. Repeat the titration until you have 3 sets
of data with titration volumes that all agree within 0.1 or 0.2 ml.

ผลลัพธ์ (อังกฤษ) 2:

1. Fill the burette with the acid solution. Initial take the reading from the bottom of
the meniscus and Record in a Table.
2. Pipette 25.0 ml of the Alkali Into a Clean Dry Conical Flask.
3. Add 2 or 3 Drops of Indicator to the Alkali.
4. Whilst the swirling Run Into the Alkali acid.
5. Stop the Titration at the Point at which the Colour Change (from Pink to colorless) is
Permanent, even on swirling. This is the end point. Record the volume shown in the
burette.
6. Check you have sufficient acid for another titration. Wash out your Conical Flask and
Refill with another 25 ml sample of Alkali. Repeat until the Titration You have 3 sets
of Data Volumes Titration with 0.1 or 0.2 ml Within Agree that all.