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Unit 2 learning Aim A
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Mariya Hussain Unit 210632164 Group 3
24/04/23
Learning Aim, A: Undertake titration and colorimetry to determine the concentration of solutions.
Risk Assessment
Sodium Carbonate- if inhaled can lead to coughing and shortness of breath. Fresh air may help.
Injury in the eye and may cause burns. Skin may be irritated.
,Dilute Hydrochloric Acid- Cause harm to eye and skin. Stinging pain.
Methyl orange indicator- Causes skin irritation, nausea and vomiting.
Breakage of glass may cut your skin.
Spillages of chemicals may cause slips and trips.
Chemical list: dilute Hydrochloric acid, sodium carbonate, methyl orange indicator.
Mean of results= 15.24
List of inaccuracies-each of the results turned pink when HCl was added. The burette may have not
been properly cleaned.
, For the trial result it was a light-yellow colour.
Accurate result- I placed the pipette in the flask when I added the solid sodium and measured it up
to the line
If the burette had been cleaned more thoroughly, then some of the results would have become an
orange colour. They affected the results because the reading would have been different.
Calculations
Colorimetry
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