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Fundamental of Chemistry
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Applied Science Unit 11 Assignment - Learning Aim D
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Fundamentals of Chemistry- Assignment Unit 1Titrations are done often to find out the concentration of one substance by reacting it
with another substance of known concentration. They are often done with
neutralisation reactions, but can be done with redox reactions.
Task 2 Part 1
Method for Titration
1. Transfer a 25cm3 (solution) of your sodium carbonate solution to a conical flask.
2. Add a few drops of methyl orange indicator solution.
3. Fill the burette with sodium carbonate (1 mol).
4. Titrate sodium carbonate until the indicator changes colour.
5. Read the volume of solution sodium carbonate added to the flask.
6. Repeat steps 1-5 until you get 2 concordant(similar) results.
Titration Results
Equipment Test Value
Methyl orange indicator 1 18.8cm
HCI 2 14.4cm
Pipette 3 14.1cm
Clamp stand 4 15.2cm
Pump 5 14cm
Calibration Average 15.3cm
Conical Flask
Task 2 Part 2
Titration uses two pieces of glassware; the pipette was used to directly deliver
exactly 25cm of the standard solution and the burette measures out specific volumes
of liquid.
Volume of hydrochloric acid = 14.17cm3
The concentration of hydrochloric acid = moles/volumes
The concentration = 0.005/ (14.17/1000)
The concentration = 0.352 mol/dm3
From what I can conclude from these results is that we resulted in an anomalous
result of 18.8cm and 15.2cm. There can be precautions taken to prevent faults
and achieve accurate results. However, I have removed the anomalous results
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