Unit 2- Practical Scientific Procedures and Techniques
Institution
PEARSON (PEARSON)
Hello, this is a D* (Distinction) grade on unit 2A assignment covering titration, pH curves and colorimetry. All criteria to achieve P1, P2, M1 & D1 are included in this assignment. The assignment is 17 pages long covering all lab reports in detail; including a few pictures on the indicator for tit...
Unit 2- Practical Scientific Procedures and Techniques
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Student declaration:
I certify that the work submitted for this assignment is my own. I have clearly
referenced any sources used in the work. I understand that false declaration is
a form of malpractice.
Student name: Abdul Binah
Date: 12/12/2022
Lab report 1 - Carrying out a titration of sodium carbonate solution (base) and
hydrochloric acid (acid)
Introduction:
I am a newly appointed technical assistant at a large chemical plant,
Chemcalequip. As part of my induction period and to progress in my role, I
have to demonstrate skills in a range of practical procedures and techniques.
Part of my role is to ensure equipment is calibrated and equipment and
chemicals are safety checked. A key part of my job will be making and testing
standard solutions using titration.
Aim of the experiment:
To reach the end point of the titration experiment (faintly coloured light pink
solution in the flask).
Hypothesis:
Changing the volume of Na2CO3 in the conical flask will change the colour of
the solution.
, Before colour change (Bright pink)
After colour change (Very, very light pink and difficult to see but perfect
nonetheless)
, Clamp stand
Volumetric flask
Small funnel
Pipette & pipette filler
White tile
Conical flask
HCL (acid) & Na2CO3 (base)
Phenolphthalein indicator
Distilled water
For standard solution:
Electric balance, Na2C03, distilled water, volumetric flask, small beaker (50-100
ml)
Risk Assessment:
Hazard Type of risk How to minimise risk Dangers
Hydrochlori Medium to Corrosive proof Corrosive to eyes and
c acid high risk gloves, safety gogglesskin, irritation when
(HCL) and do not inhale inhaled and possible
acid. inflammation
Broken Low Place any glass items Can cut skin and bleed
glassware away from table allowing bacteria or
edges. chemicals to infect
wound.
Sodium Medium to Corrosive proof Inhalation can cause
carbonate high risk gloves, safety goggles, coughing or shortness of
(Na2C03) do not inhale and use breath. Eye contact can
in well-ventilated cause blindness.
area.
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