Unit 2 Assignment A Anonymous
Titration is a popular quantitative analytical method that enables the reaction of a
solution with a solution of known concentration to determine an unknown
concentration of a solution. The concentration of a sodium hydroxide (NaOH)
solution is ascertained in this study using an acid-base titration. As a primary
standard, sodium carbonate (Na₂CO₃) must be used to prepare and standardize
hydrochloric acid (HCl). Important pieces of equipment including pipettes, balances,
and a pH meter need to be correctly calibrated in order to guarantee precision and
dependability. The accuracy of the titration results will be assessed and contrasted
with those of other students and published sources. Additionally, safety issues will
be covered, such as how to handle corrosive chemicals and how to follow lab
procedures.
Equipment:
Glassware and apparatus:
- Burette – used to gradually release the titrant into the solution
- Pipette – used to accurately measure and transfer a fixed volume of a
solution
- Pipette filler – a device used to draw liquid into the pipette without direct
contact
- Conical flask – holds the analyte solution and allowed for easy swirling during
titration to allow proper mixing
- Volumetric flask – used for preparing standard solutions with precise
concentrations
- Beakers – used for holding and transferring solutions
Measuring and calibration:
- Analytical balance – ensures accurate measurements of solid substances,
such as sodium carbonate when preparing a standard solution
- pH Meter – used to measure the pH of the solution, particularly for monitoring
the titration endpoint in non-indicator-based titrations.
Indicators and chemicals:
- Phenolphthalein indicator – helps identify the endpoint of the titration by
changing colour
- Standard solutions – includes sodium carbonate (Na 2CO3) for standardising
hydrochloric acid (HCl) and titrating sodium hydroxide (NaOH)
Additional equipment:
- Clamp stand and burette holder – supports the burette in a vertical position
for accurate dispensing
- Wash bottle with distilled water – used for rinsing the flask and ensuring
complete reaction of all reactants
- White tile – placed under the conical flask to improve visibility of the colour
change during endpoint detection
- Funnel – helps to safely fill the burette without any spills
1
28/02/2025
, Unit 2 Assignment A Anonymous
Risk assessment:
Hazard Risk Control measures Risk Levels
Hydrochloric acid Skin irritation, Wear gloves, High -> low
- corrosive burns or eye safety goggles,
damage if spilled and a lab coat.
Work in a well-
ventilated area.
Use a pipette filler
to avoid direct
contact
Sodium hydroxide Can cause severe Wear gloves, High -> Low
- corrosive skin burns and safety goggles,
eye damage and a lab coat.
Rinse
immediately if
contact occurs.
Use small
amounts to
minimise spills.
Sodium carbonate Can cause Wear gloves and Medium -> Low
- irritant skin/eye irritation safety goggles.
and respiratory Avoid inhaling
issues if inhaled dust. Use a fume
cupboard if
available.
Glassware - Risk of cuts and Handle glassware Medium -> Low
breakage injuries from carefully inspect
broken glass for cracks before
use and keep it on
a stable surface.
Dispose of broken
glass safely.
Spillage of May cause skin Clean spills Medium -> Low
chemicals irritation or immediately
damage surfaces using appropriate
methods.
Neutralise
acid/base spills as
needed.
Pipette filler Accidental Never pipette by High -> Low
misuse ingestion or mouth, always
exposure to use a pipette
chemicals filler. Ensure
proper technique
is used.
Burette handling Risk of chemical Secure the Medium -> Low
exposure from burette with a
leaked or clamp stand. Do
overflows not overfill.
2
28/02/2025
Titration is a popular quantitative analytical method that enables the reaction of a
solution with a solution of known concentration to determine an unknown
concentration of a solution. The concentration of a sodium hydroxide (NaOH)
solution is ascertained in this study using an acid-base titration. As a primary
standard, sodium carbonate (Na₂CO₃) must be used to prepare and standardize
hydrochloric acid (HCl). Important pieces of equipment including pipettes, balances,
and a pH meter need to be correctly calibrated in order to guarantee precision and
dependability. The accuracy of the titration results will be assessed and contrasted
with those of other students and published sources. Additionally, safety issues will
be covered, such as how to handle corrosive chemicals and how to follow lab
procedures.
Equipment:
Glassware and apparatus:
- Burette – used to gradually release the titrant into the solution
- Pipette – used to accurately measure and transfer a fixed volume of a
solution
- Pipette filler – a device used to draw liquid into the pipette without direct
contact
- Conical flask – holds the analyte solution and allowed for easy swirling during
titration to allow proper mixing
- Volumetric flask – used for preparing standard solutions with precise
concentrations
- Beakers – used for holding and transferring solutions
Measuring and calibration:
- Analytical balance – ensures accurate measurements of solid substances,
such as sodium carbonate when preparing a standard solution
- pH Meter – used to measure the pH of the solution, particularly for monitoring
the titration endpoint in non-indicator-based titrations.
Indicators and chemicals:
- Phenolphthalein indicator – helps identify the endpoint of the titration by
changing colour
- Standard solutions – includes sodium carbonate (Na 2CO3) for standardising
hydrochloric acid (HCl) and titrating sodium hydroxide (NaOH)
Additional equipment:
- Clamp stand and burette holder – supports the burette in a vertical position
for accurate dispensing
- Wash bottle with distilled water – used for rinsing the flask and ensuring
complete reaction of all reactants
- White tile – placed under the conical flask to improve visibility of the colour
change during endpoint detection
- Funnel – helps to safely fill the burette without any spills
1
28/02/2025
, Unit 2 Assignment A Anonymous
Risk assessment:
Hazard Risk Control measures Risk Levels
Hydrochloric acid Skin irritation, Wear gloves, High -> low
- corrosive burns or eye safety goggles,
damage if spilled and a lab coat.
Work in a well-
ventilated area.
Use a pipette filler
to avoid direct
contact
Sodium hydroxide Can cause severe Wear gloves, High -> Low
- corrosive skin burns and safety goggles,
eye damage and a lab coat.
Rinse
immediately if
contact occurs.
Use small
amounts to
minimise spills.
Sodium carbonate Can cause Wear gloves and Medium -> Low
- irritant skin/eye irritation safety goggles.
and respiratory Avoid inhaling
issues if inhaled dust. Use a fume
cupboard if
available.
Glassware - Risk of cuts and Handle glassware Medium -> Low
breakage injuries from carefully inspect
broken glass for cracks before
use and keep it on
a stable surface.
Dispose of broken
glass safely.
Spillage of May cause skin Clean spills Medium -> Low
chemicals irritation or immediately
damage surfaces using appropriate
methods.
Neutralise
acid/base spills as
needed.
Pipette filler Accidental Never pipette by High -> Low
misuse ingestion or mouth, always
exposure to use a pipette
chemicals filler. Ensure
proper technique
is used.
Burette handling Risk of chemical Secure the Medium -> Low
exposure from burette with a
leaked or clamp stand. Do
overflows not overfill.
2
28/02/2025
